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Acid rain

Acid rain is rain droplets containing sulphuric oxides (SO2 and SO3) and nitrogen dioxide (NO2).

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Environmental engineering

Environmental engineering is a term that describes and refers to a derivative of civil engineering concerned with the development of processes and infrastructure for the supply of water, the disposal of waste and the control of pollution of all kind,

Green Chemistry

Green chemistry is a term used on an emerging field of science that develops chemicals to be benign. Rather than presuming to keep human and ecological exposures to chemicals within levels of toxicity deemed “acceptable,”, sustainable chemistry aims to make chemicals inherently safe.

Heavy metals

Heavy metal is a term used to describe a subset of a large number of metals and metalloids with high atomic(such as chromium, cadmium, arsenic and mercury), listed in the periodic table of the elements, which have properties of both metals and non-metals.