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An aerosol is a collection of microscopic particles, solid or liquid, suspended in a gas.
In the context of air pollution, an aerosol refers to fine particulate matter, that is larger than a molecule, but small enough to remain suspended in the atmosphere for at least several hours.
The term aerosol is also commonly used for a pressurized container (aerosol can) which is designed to release a fine spray of a material such as paint. It has also come to be associated, erroneously, with the gas (propellant) used to expel materials from an aerosol can. (Source: GreenFacts )
The mass of air surrounding the Earth.
The atmosphere consists of nitrogen (78%), oxygen (21%), and traces of other gases such as argon, helium, carbon dioxide, and ozone.
The atmosphere plays an important role in the protection of life on Earth; it absorbs ultraviolet solar radiation and reduces temperature extremes between day and night. (Source: GreenFacts)
The smallest particle of an element that still conserves the chemical properties of that element. Atoms are composed of electrons, protons, and neutrons. (Source: GreenFacts)
Autoimmunity happens when the body fails to recognise some of its own tissues or cells and attacks them as if they were foreign.
Diseases arising from this abnormal immune response are called autoimmune diseases.
Examples of autoimmune diseases include type 1 diabetes and lupus. (Source: GreenFacts)
Bioaccumulation is used to describe the increase in concentration of a substance in an organism over time.
Bioaccumulative substances tend to be fat soluble and not to be broken down by the organism. (Source: GreenFacts )
Biodiversity is a contraction of biological diversity. Biodiversity reflects the number, variety and variability of living organisms.
It includes diversity within species (genetic diversity), between species (species diversity), and between ecosystems (ecosystem diversity). (Source: GreenFacts)
The transfer of substances from the environment to plants, animals, and humans.
(Source: ATSDR Glossary of Terms
The dense, living tissue that makes up the skeleton of humans and vertebrate animals.
Mature bones are made up of three types of tissue: compact tissue (the hard outer portion of most bones); cancellous tissue (spongy tissue inside the bones that contains bone marrow, which makes blood cells); and subchondral tissue (smooth bone tissue of the joints).
Cancellous tissue, also known as cancellous bone, spongy bone or trabecular bone, is characterized by its spongy, porous, honeycomb-like structure and is typically found at the ends of long bones. Compact tissue is also known as hard bone, compact bone or compact cortical bone. (Source: GreenFacts)
Br-. An inorganic bromide anion. Also used to describe any compound (usually a bromide salt) that contains the Br- ion, such as sodium bromide (NaBr). (Source: GreenFacts)
Bromine (Br) is mainly used in fire retardants and fine chemicals. It is a very strong oxidizer (highly reactive substance that readily takes on electrons) and belongs to the same chemical family as chlorine. Elemental bromine is a reddish-brown liquid. It has an irritating effect on the eyes and throat and has a bleaching action. When spilled on the skin it produces painful sores. (Source: GreenFacts )
Any one of a group of diseases that occur when cells in the body become abnormal and have the potential to spread and establish growth in nearby tissues and other parts of the body (malignancy). (Source: GreenFacts )
A colorless, odorless, non-combustible gas, present in low concentrations in the air we breathe (about three hundredths of one percent by volume).
Carbon dioxide is produced when any substance containing carbon is burned. It
is also a product of breathing and fermentation. Plants absorb carbon dioxide
through photosynthesis.
(Source: The Pacific Forest Trust
Glossary
An odorless, colorless, and highly poisonous gas.
The removal and storage of carbon from the atmosphere in carbon sinks (such as oceans, forests or soils) through physical or biological processes, such as photosynthesis.
Humans have tried to increase carbon sequestration by growing new forests. (Source: GreenFacts)
A carcinoma is a cancerous tumour that starts in tissues covering or lining various organs of the body or in glands, such as skin, uterus, prostate, breast, or stomach. Carcinomas tend to infiltrate into nearby tissues. They may also spread to distant organs such as lung, bone, liver, or the brain. Carcinomas are the most common type of cancer. (Source: GreenFacts)
A clouding of the natural lens of the eye most frequently caused by ageing that can severely blur vision. (Source: GreenFacts)
The basic subunit of any living organism; the simplest unit that can exist as an independent living system. There are many different types of cells in complex organisms such as humans, each with specific characteristics. (Source: GreenFacts)
Chlorine (Cl2) is produced in large amounts and widely used both
industrially and domestically as a
disinfectant and bleach. In particular, it
is widely used in the disinfection of swimming pools and is the most commonly
used disinfectant and oxidant for drinking-water treatment. In water, chlorine
reacts to form hypochlorous acid and hypochlorites.
(Source:
WHO
Organic compounds made up of atoms of carbon, chlorine (Cl2), and
fluorine (F2). An example is CFC-12 (CCl2F2),
used as a refrigerant in refrigerators and air conditioners and as a foam
blowing agent. Gaseous CFCs can deplete the ozone layer when they slowly rise
into the stratosphere, are broken down by strong ultraviolet radiation, release
chlorine atoms, and then react with ozone molecules.
(Source:
US EPA
Glossary of Climate Change Terms
CHCl3: Chloroform is an organic compound part of the trihalomethane. It is colorless and has a pleasant, nonirritating odor with a slightly sweet taste. Chloroform evaporates easily into the air and dissolves easily in water. It is derived primarily from various industrial and chemical processes, or as a by-product of disinfecting water with chlorine. Chloroform is largely present in drinking water. Although it is both a man-made and a naturally occurring compound, human activity is responsible for most of the chloroform found in the environment. (Source: GreenFacts)
The system that contains the heart and the blood vessels and moves blood
throughout the body. This system helps
tissues get enough oxygen and nutrients, and
it helps them get rid of waste products. The lymph system, which connects with
the blood system, is often considered part of the circulatory system.
(Source:
NCI
Dictionary of cancer
terms
The long-term fluctuations in temperature, precipitation, wind, and all other aspects of the Earth's climate.
It is also defined by the United Nations Convention on Climate Change as
“change of climate which is attributed directly or indirectly to human activity
that alters the composition of the global atmosphere and which is in addition to
natural climate variability observed over comparable time periods”
(Source:
CoRIS
glossary
When referring to humans, a community is defined as:
A collection of human beings who have something in common.
A local community is a fairly small group of people who share a common place of residence and a set of institutions based on this fact, but the word ‘community’ is also used to refer to larger collections of people who have something else in common (e.g., national community, donor community).
When referring to other living organisms, a community is defined as:
An assemblage of species occurring in the same space or time, often linked by
biotic interactions such as competition or predation.
(Source:
Millennium Ecosystem Assessment
A transparent membrane covering the eyeball and the inner surface of the eyelid. (Source: GreenFacts)
The inflammation of the mucous membrane covering the outer (exposed) part of the eyeball and the inner surface of the eyelids.
It is the most common infection of the eye in children. (Source: GreenFacts)
"The "Consortium for Oceanographic Activities for Students and Teachers," or COAST, is a working collaborative designed to effectively deliver oceanographic and coastal processes education to pre- and inservice teachers from kindergarten through the twelfth grade (K-12). Each of the COAST members offers expertise in different areas and through focused efforts at specific educational levels provides depth of knowledge and resources in these areas. As a collaborative, the partners provide the broadest spectrum of means, methods and materials for ocean science education, as well as a nationwide telecommunications infrastructure."
(Source: COAST website
A persistent reduction in the capacity to provide ecosystem services.
(Source:
MA
Effects in the developing offspring due to exposure before conception (either
parent), prenatally, or postnatally to the time of sexual maturation.
Developmental effects may be expressed at any time in the life span of the
organism. Developmental effects are a subset of reproductive effects.
(Source:
CSIRO
CSIRO biological effects and safety of EMR
Glossary
Any natural or human-induced factor that directly or indirectly causes a
change.
(Source:
MA
Dryland systems are ecosystems characterised by a lack of water. They include cultivated lands, scrublands, shrublands, grasslands, savannas, semi-deserts and true deserts.
The lack of water constrains the production of crops, forage, wood, and other ecosystem services.
Four dryland subtypes are widely recognized: dry sub-humid,
semiarid, arid, and
hyperarid, showing an increasing level of aridity or moisture
deficit.
(Source: GreenFacts based on Millennium Ecosystem Assessment
RIVM works to prevent and control outbreaks of infectious diseases.
We promote public health and consumer safety, and we help to protect the quality of the environment.
RIVM collects and collates knowledge and information from various sources, both national and international.
We apply this knowledge ourselves, and we place it at the disposal of policy-makers, researchers, regulatory authorities and the general public.
Each year, RIVM produces numerous reports on all aspects of public health,
nutrition and diet, health care, disaster management, nature and the
environment.
(Source:
www.rivm.nl/en
Any variation in the state, outputs, or structure of an ecosystem.
(Source:
MA
The complex system of plant, animal, fungal, and microorganism communities and their associated non-living environment interacting as an ecological unit.
Ecosystems have no fixed boundaries; instead their parameters are set to the
scientific, management, or policy question being examined. Depending upon the
purpose of analysis, a single lake, a
watershed, or an entire region could be
considered an ecosystem.
(Source:
US EPA
Glossary of Climate Change Terms
A natural process in which elements are continuously cycled in various forms between different compartments of the environment (e.g., air, water, soil, organisms).
Examples include the carbon, nitrogen and phosphorus cycles (nutrient cycles) and the water cycle. (Source: GreenFacts)
"The European Commission (EC) embodies and upholds the general interest of the [European] Union and is the driving force in the Union's institutional system. Its four main roles are to propose legislation to Parliament and the Council, to administer and implement Community policies, to enforce Community law (jointly with the Court of Justice) and to negotiate international agreements, mainly those relating to trade and cooperation."
The Commission's staff is organised into 36 Directorates-General (DGs) and
specialised services, such as the Environment DG and the Research DG.
(Source:
EC website
The European Environmental Agency (EEA) is one of the 15 specialised agencies of the European Union, which handle specific technical, scientific or management tasks. Operational since 1994, the EEA is based in Copenhagen.
"Its mission is to collect, prepare and disseminate timely, targeted, relevant and reliable information on the state and trends of the environment at European level. The founding regulation of EEA stipulates that it is open to countries that do not belong to the European Union but share its concern for the environment. Iceland, Liechtenstein and Norway have been members from the start, and 12 out of 13 candidate countries have joined in 2002 (...)."
(Source: EEA website
Contact of the cells of an organism with a substance, micro-organism or radiation. In the case of humans, this may involve contact with a substance or agent by swallowing, breathing, or through the skin or eyes. Exposure may be short-term [acute exposure], of intermediate duration, or long-term [chronic exposure].
Exposure can be divided into external and internal.
External exposure refers to the whole dose to which an organism is exposed.
Internal exposure refers only to that fraction of the initial chemical dose that is absorbed and distributed throughout the body via systemic circulation. (Source: GreenFacts)
The process by which a system responds to a disturbance that makes it deviate from its initial state. (Source: GreenFacts)
The ability of people or animals to produce healthy offspring in abundance.
Unlike fecundity, which measures a potential ability, fertility measures the actual number of offspring of an individual, a couple, a group or a population. It is evaluated by the time to achieve pregnancy.
Please note that "fertility" corresponds to "fécondité" in French and "fecundidad" in Spanish whereas the French word "fertilité" and the Spanish word "fertilidad" mean "fecundity". (Source: GreenFacts)
An oil extracted from body (body oil) or liver (liver oil) of fish and marine
mammals; mostly a byproduct of fish meal production.
(Source:
NOAA
Frequency is the measurement of the number of times that a repeated event occurs per unit of time.
The frequency of wave-like patterns including sound, electromagnetic waves (such as radio or light), electrical signals, or other waves, expresses the number of cycles of the repetitive waveform per second.
In SI units, the result is measured in Hertz (Hz), named after the German physicist, Heinrich Rudolf Hertz. 1 Hz means one cycle (or wave) per second.
Frequency has an inverse relationship to the concept of wavelength (the distance between two peaks) such that the frequency is equal to the velocity divided by the wavelength. (Source: GreenFacts)
Greenhouse gases are those gaseous constituents of the atmosphere, both natural and anthropogenic, that absorb and emit radiation at specific wavelengths within the spectrum of infrared radiation emitted by the Earth’s surface, the atmosphere and clouds.
This property causes the greenhouse effect.
Water vapour (H2O), carbon dioxide (CO2),
nitrous oxide (N2O), methane (CH4), and
ozone (O3) are the primary greenhouse gases
in the Earth’s atmosphere. Moreover there are a number of entirely human-made
greenhouse gases in the atmosphere, such as the halocarbons and other
chlorine and bromine containing substances,
dealt with under the Montreal Protocol. Beside CO2, N2O and CH4, the
Kyoto Protocol deals with the greenhouse gases
sulphur hexafluoride (SF6),
hydrofluorocarbons (HFCs) and perfluorocarbons (PFCs).
(Source:
IPCC
Glossary
Metallic elements with high atomic weights, e.g. mercury, chromium, cadmium, arsenic, and lead.
They can damage living things at low
concentrations and tend to
accumulate in the food chain.
(Source:
US EPA
Drinking Water
Glossary
The immune system is a network of cells, tissues, and organs that work
together to defend the body against attacks by “foreign” invaders.
(Source:
NIAID
Immune System
Inflammation is the reaction of living tissues to infection, irritation or other injury. (Source: GreenFacts)
Small abundant shrimp-like crustaceans mostly present in Antarctic waters that form an important part of the food chain and that are a major source of food for baleen whales, for example. (Source: GreenFacts)
Surface layer on the forest floor of loose non-living organic debris
consisting of freshly fallen or slightly decomposed plant parts (below a certain
diameter), such as leaves, bark, twigs, flowers, fruits, and other vegetable
matter.
(Source: GreenFacts, based on
Alaska Geobotany Center
Methane is a colorless, flammable, nontoxic gas with the chemical formula CH4.
This gas is formed naturally by the decomposition of organic matter. Wetlands, livestock and energy are the main sources of methane emissions to the atmosphere, where it acts as a greenhouse gas.
Methane is also a major component of natural gas. It is mainly extracted from geological deposits for fuel and industrial uses (Source: GreenFacts )
In chemistry a methyl-group is an alkyl functional group with the formula -CH3 .
This hydrocarbon unit can be found in many organic compounds, like biodiesel (methyl ester). (Source: GreenFacts )
Any living organism that is too small to be seen by the naked eye such as bacteria, viruses, protozoa, single-celled algae, and many types of fungi. (Source: GreenFacts)
Mathematical representation or simulation of an actual situation. (Source: GreenFacts)
A molecule is the smallest part of any chemical compound composed of two or
more atoms and which has the qualities of that substance and can exist alone in
a free state. As an example, a molecule of water (H2O) consists of
two atoms of hydrogen and one of oxygen.
(Source: GreenFacts, based on Helios
Glossary
Mollusks are a large group of soft-bodied invertebrates that are widespread in salt water, freshwater, and terrestrial habitats. Examples of mollusks include snails, clams, squids, octopus, and cuttlefish.
Most mollusks have a muscular foot and a hard, calcareous outer shell protecting their soft body, but some, as in the squid and octopus, lack this type of shell. (Source: GreenFacts)
Death. Usually the cause (a specific disease, a condition, or an injury) is
stated.
(Source:
ATSDR
Glossary of Terms
Material with one or more external dimensions, or an internal structure, at
nanoscale and which could exhibit novel characteristics compared to the same
material at a larger scale.
(Source: based on SCENIHR's
opinion on
the
Organic matter originating from plants and animals present in natural (untreated or raw) waters, for example, in lakes, rivers and reservoirs. (Source: GreenFacts)
The approximately 20 chemical elements
known to be essential for the growth of living organisms, including nitrogen,
sulfur, phosphorus, and carbon.
(Source:
Millennium Ecosystem Assessment
Glossary
Arsenic compounds containing carbon. They are mainly found in sea-living organisms, although some of these compounds have also been found in species living on land. (Source: GreenFacts)
Ozone is a form of oxygen having the molecular form of O3. It is a bluish, unstable gas with a pungent odour, found in two parts of the atmosphere: the stratosphere and the troposphere.
The ozone layer: The stratosphere contains a layer in which the concentration of ozone is greatest, the so called ozone layer. The layer extends from about 12 to 40 km. It shields the Earth from ultraviolet radiation's harmful health effects on humans and the environment. This layer is being depleted by human emissions of chlorine- and bromine-containing compounds.
Ground-level ozone: At ground level (in the troposphere), ozone is considered an air pollutant that can seriously affect the human respiratory system. It is a chemical oxidant and a major component of photochemical smog. (Source: GreenFacts)
Sum of all microscopic solid and liquid particles, of human and natural origin, that remain suspended in a medium such as air for some time. These particles vary greatly in size, composition, and origin, and may be harmful.
Particulate matter may be in the form of fly ash, soot, dust, fog, fumes etc. (Source: GreenFacts)
Organisms, including bacteria, viruses or cysts, capable of causing diseases
(typhoid, cholera, dysentery) in a host (such as a person). There are many types
of organisms which do NOT cause disease. These organisms are called
non-pathogenic.
(Source:
US EPA
US EPA Drinking Water Glossary, A Dictionary of Technical and Legal Terms
Related to Drinking
Water
A layer of soil or bedrock at a variable depth beneath the surface of the earth in which the temperature has been below freezing continuously from a few to several thousands of years.
Persistent organic pollutants (POPs) are chemical substances that persist in the environment, bioaccumulate through the food web, and pose a risk of causing adverse effects to human health and the environment. This group of priority pollutants consists of pesticides (such as DDT), industrial chemicals (such as polychlorinated biphenyls, PCBs) and unintentional by-products of industrial processes (such as dioxins and furans).
Persistent Organic Pollutants are transported across international boundaries
far from their sources, even to regions where they have never been used or
produced.
(Source:
European Commission
Environment DG
POPs
A toxic chemical product that kills
harmful organisms (e.g., insecticides,
fungicide, weedicides, rodenticides, acaricides).
(Source:
FAO
Glossary of biotechnology & genetic
engineering
pH is a measure of the concentration of protons (H+) in a solution and, therefore, its acidity or alkalinity. The concept was introduced by S.P.L. Sørensen in 1909. The p stands for the German "Potenz", meaning power or concentration, and the H for the hydrogen ion (H+). In layman's terms , the "pH" value is an approximate number between 0 and 14 that indicates whether a solution is acidic (pH < 7), basic (pH > 7) or neither (pH = 7) [neutral]. (Source: GreenFacts )
Refers to any chemical reaction which occurs as a result of light energy from the sun.
For example, ozone is formed through a photochemical reaction involving
nitrogen dioxide and reactive organic compounds.
(Source:
DNREC online
A polymer is a high-molecular-weight organic compound, natural or man-made, consisting of many repeating simpler chemical units or molecules called monomers.
Examples of natural polymers are proteins (polymer of amino acids) and cellulose (polymer of sugar molecules).
An example of synthetic polymer is PVC (a polymer of vinyl chloride). (Source: GreenFacts)
A group or number of people living within a specified area or sharing similar
characteristics (such as occupation or age).
(Source:
ATSDR
Glossary of
Terms
A primary pollutant is an air pollutant emitted directly from a source.
A secondary pollutant is not directly emitted as such, but forms when other pollutants (primary pollutants) react in the atmosphere.
Examples of a secondary pollutant include ozone, which is formed when hydrocarbons (HC) and nitrogen oxides (NOx) combine in the presence of sunlight; NO2, which is formed as NO combines with oxygen in the air; and acid rain, which is formed when sulfur dioxide or nitrogen oxides react with water. (Source: GreenFacts)
Energy moving in the form of particles or waves. Familiar radiations are heat,
light, radio waves, and microwaves. Ionizing radiation is a
very high-energy form of electromagnetic radiation.
(Source:
US Center for Disease Control and Prevention
Glossary of Radiological Terms
In the context of the IPCC assessments, radiative forcing refers to an external perturbation in the radiative energy budget of the Earth’s climate system, which may lead to changes in climate parameters.
A positive forcing (more incoming energy) tends to warm the system, while a negative forcing (more outgoing energy) tends to cool it. This is due to changes in drivers of climate change such as the concentration of carbon dioxide or the output of the Sun.
In the IPCC reports, changes in radiative forcing are relative to the year 1750. (Source: GreenFacts)
The organs that are involved in breathing.
These include the nose, throat, larynx, trachea, bronchi, and lungs. Also
known as the respiratory system.
(Source: St. Jude Children's Research Hospital Glossary
Sea ice is frozen ocean water.
It occurs in both the Arctic and Antarctic and can cover large extents of water.
It grows during the winter months and melts during the summer months, but some sea ice remains all year in certain regions.
About 15 percent of the world's oceans are covered by sea ice during part of the year.
The freezing temperature of salt water is lower than fresh water; ocean
temperatures must reach -1.8° C Celsius (28.8°F) to freeze.
(Source: GreenFacts based on NSIDC
All about sea
ice
A tumour that grows from skin cells and which can have different causes,
including repeated severe sunburns or long-term exposure to the sun.
(Source: GreenFacts, based on EcoHealth; Glossary
A substance is soluble if it dissolves in certain fluids. The fluid [gas or liquid] (present in excess) is called the solvent and the substance dissolved in it is called the solute which together form a solution. The process of dissolving is called solvation. A solution that can not hold any more solute is said to be saturated. (Source: GreenFacts )
A group of organisms that differ from all other groups of organisms and that
are capable of breeding and producing fertile offspring. This is the smallest
unit of classification for plants and animals.
(Source:
OceanLink
Glossary of Common Terms and Definitions in Marine
Biology
The highly stratified region of the atmosphere above the troposphere extending from about 10 km (ranging from 9 km in high latitudes to 16 km in the tropics on average) to about 50 km. (Source: Climate Change Glossary)
Water on the surface of the Earth, such as in lakes, rivers, streams, ponds,
and springs.
(Source:
ATSDR Glossary of Terms
The likelihood of producing a significantly larger-than-average response to a specified exposure to a substance.
The production of a substance by either joining chemical elements, groups, and/or simpler compounds or breaking down a complex compound. (Source: GreenFacts )
The Joint Group of Experts on the Scientific Aspects of Marine Environmental Protection (GESAMP) is an advisory body, established in 1969, that advises the United Nations (UN) system on the scientific aspects of marine environmental protection.
At present GESAMP is jointly sponsored by nine UN organizations with responsibilities relating to the marine environment, and they utilize GESAMP as a mechanism for coordination and collaboration among them. GESAMP functions are to conduct and support marine environmental assessments, to undertake in-depth studies, analyses, and reviews of specific topics, and to identify emerging issues regarding the state of the marine environment. GESAMP itself today consists of 16 experts, drawn from a wide range of relevant disciplines, who act in an independent and individual capacity. Studies and assessments are usually carried out by dedicated working groups, most of whose members are not sitting members of GESAMP but part of the broader GESAMP network.
GESAMP's UN sponsors: IMO, FAO, UNESCO-IOC, WMO, IAEA, UN, UNEP, UNIDO, UNDP.GESAMP
Source:
(Source:
www.gesamp.org/about
The World Ocean Review series is published by maribus, a non-profit company founded by the mareverlag publishing house. maribus is dedicated to raising the public’s awareness of interrelationships in marine science, thus contributing to a more effective protection of the seas. Our publications are not for sale, but are made available free of charge.
Contributions to the publications have been received from numerous partners and researchers whose many years’ involvement with the marine environment has put them at the cutting edge of science:
The purpose of our publications is to present scientifically robust knowledge in a form accessible to any reader, and thus to serve all those who wish to engage actively and knowledgably in debate on the issues surrounding marine science.
(Source:
http://worldoceanreview.com/en/
The capacity or property of a substance to cause adverse effects. (Source: GreenFacts)
The lowest part of the atmosphere from the surface to about 10 km in altitude in mid-latitudes (ranging from 9 km in high latitudes to 16 km in the tropics on average) where clouds and "weather" phenomena occur. In the troposphere temperatures generally decrease with height. (Source: GreenFacts)
Electromagnetic radiation of shorter wavelength than visible light but of longer wavelenght than x-rays, i.e. ranging from approximately 400 nm to 100 nm.
The most common source of ultraviolet radiation is the sun, but it can also be produced artificially by UV lamps.
UV radiation is divided into three bands: UVA, UVB, and UVC. All three bands are classified as a probable human carcinogen.
UVA – Long-wavelength UVA covers the range 315–400 nm. Not significantly filtered by the atmosphere. Approximately 90% of UV radiation reaching the Earth’s surface. UVA is again divided into UVA-I (340 nm - 400 nm) and UVA-II (315 nm - 340 nm).
UVB – Medium-wavelength UVB covers the range 280–315 nm. Approximately 10% of UV radiation reaching the Earth’s surface.
UVC – Short-wavelength UVC covers the range 100–280 nm. All solar UVC
radiation is absorbed by the ozone layer.
(Source: GreenFacts based on WHO
"The United Nations Environment Programme (UNEP), established in 1972, works to encourage sustainable development through sound environmental practices everywhere. Its activities cover (...) the promotion of environmental science and information, to an early warning and emergency response capacity to deal with environmental disasters and emergencies."
See also UNEP.Net
A virus is a small organism which can infect other biological organisms.
Viruses can only reproduce by invading and taking over cells as they lack the cellular machinery for self reproduction.
They cause diseases in human beings, animals, plants and bacteria.
Examples of human diseases caused by viruses include the common cold, influenza, small pox, AIDS, and cold sores. (Source: GreenFacts)
Vitamins are a group of organic micronutrients that are required by the body for healthy growth, development and immune system functioning.
Certain vitamins are produced by the body but most vitamins are obtained from food or from manufactured dietary supplements. (Source: GreenFacts)
Able to readily evaporate at normal temperatures and pressures. (Source: GreenFacts)
Any organic (carbon-containing) compound that evaporates readily to the atmosphere at room temperature.
VOCs contribute significantly to smog production and certain health problems.
VOCs often have odors, examples include gasoline, alcohol, and the solvents used in paints. (Source: GreenFacts)
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