Give the names of green house gases.
Carbon dioxide, methane, ozone, chlorofluoro-carbon compounds and water vapour are the green house gases.
Mention the effect of chemical pollutants on human body.
Explain in short : Effect of ozone depletion on environment.
Which components are present in stratosphere?
What are pesticides and herbicides ? Explain giving examples.
What is Bio-chemical oxygen demand ?
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