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English Terms,ESL Definitions |
English for Science &
Nature Glossary of Terms
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a b c d e f g h i j k l m n o p q r s t u v w x y z
acid rain - the precipitation of dilute
solutions of strong mineral acids, formed by the mixing
in the atmosphere of various industrial pollutants,
primarily sulfur dioxide and nitrogen oxides, with
naturally occuring oxygen and water vapor.
act - in the legislative sense, a bill or
measure passed by the Government; a law.
aerosol - a suspension of small liquid or solid
particles in gas.
air pollution - toxic or radioactive gases or
particulate matter introduced into the atmosphere,
usually as a result of human activity.
alternative energy - energy that is not
popularly used and is usually environmentally sound,
such as solar or wind energy (as opposed to fossil
fuels).
alternative fibers - fibers produced from
non-wood sources for use in paper making.
alternative fuels - transportation fuels other
than gasoline or diesel. Includes natural gas,
methanol, and electricity.
alternative transportation - modes of travel
other than private cars, such as walking, bicycling,
rollerblading, carpooling and transit.
amendment - a change or addition to an existing
law or rule.
ancient forest - a forest that is typically
older than 200 years with large trees, dense canopies
and an abundance of diverse wildlife.
aquaculture - the controlled rearing of fish or
shellfish by people or corporations who own the
harvestable product, often involving the capture of the
eggs or young of a species from wild sources, followed
by rearing more intensively than possible in nature.
aquifer - underground source of water.
arms control - coordinated action based on
agreements to limit, regulate, or reduce weapon systems
by the parties involved.
ash - incombustible residue left over after
incineration or other thermal processes.
asthma - a condition marked by laboured
breathing, constriction of the chest, coughing and
gasping usually brought on by allergies.
atmosphere - the 500 km thick layer of air
surrounding the earth which supports the existence of
all flora and fauna.
atomic energy - energy released in nuclear
reactions. When a neutron splits an atom's nucleus into
smaller pieces it is called fission. When two nuclei
are joined together under millions of degrees of heat
it is called fusion. |
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