1. give one example of biotic component of biosphere 2. explain any three human activities that cause air pollution .mention any two harmful effects of air pollution 3. name two gases which cause greenhouse effect 4. what is chemical formula of ozone? what essential function does this gas perform and where it is found ? what are CFC?
2) firstly factories for harmful air
b) vehicles is the most harmful air produce
c) therefore create a many problems and mostly problem children and old man and woman
3) metha , carbon dioxide
4)O3
5) ozone gas is protect the ultraviolet radiation reach on sun this is found in earth for upper layer
6) chlorofluorocarbons