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Carbon cycle
The carbon cycle is the
biogeochemical cycle by
which carbon is exchanged
between the biosphere,
geosphere, hydrosphere and
atmosphere of the Earth. The
cycle is usually thought of
as four major reservoirs of
... > full story
Atmospheric chemistry
Atmospheric chemistry is a
branch of atmospheric
science in which the
chemistry of the Earth's
atmosphere and that of other
planets is studied. It is a
multidisciplinary field of
research and draws on
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Fertilizer
Fertilizers or fertilisers
are compounds given to
plants with the intention of
promoting growth; they are
usually applied either via
the soil, for uptake by
plant roots, or by foliar
spraying, for uptake through
... > full story
Phosphate
In inorganic chemistry, a
phosphate is a salt of
phosphoric acid. Phosphates
are also important in
biochemistry. Surface runoff
of phosphates from
excessively fertilized
farmland can be a cause of
... > full story
Browse Reference Articles
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Soil science
Soil science deals with soil as a natural resource on the surface of the earth including soil formation, classification and mapping; physical, chemical, biological, and fertility properties of soils ... > more -
Soil contamination
Soil contamination is the presence of man-made chemicals or other alteration to the natural soil environment. This type of contamination typically arises from rupture of underground storage tanks, ... > more -
Nitrogen oxide
NOx is a generic term for the various nitrogen oxides produced during combustion. They are believed to aggravate asthmatic conditions, react with the oxygen in the air to produce ozone, which is also ... > more -
Activated carbon
Activated carbon (also called activated charcoal) is the more general term which includes carbon material mostly derived from charcoal. It denotes a material which has an exceptionally high surface ... > more -
Earth science
Many scientists are now starting to use an approach known as Earth system science which treats the entire Earth as a system in its own right, which evolves as a result of positive and negative ... > more -
Geophysics
Geophysics, the study of the earth by quantitative physical methods, especially by seismic reflection and refraction, geodesy, gravity, magnetic, electrical, electromagnetic, and radioactivity ... > more -
Environmental engineering
Environmental engineering is the application of science and engineering principles to improve the environment (air, water, and/or land resources), to provide healthful water, air, and land for human ... > more -
Organic gardening
Organic gardening is a form of gardening that uses substantial diversity in pest control to reduce the use of pesticides and tries to provide as much fertility with local sources of nutrients rather ... > more
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