Question

1) State in brief the role for photosynthesis and respiration in carbon cycle?
2)Name three processes in which Oxygen is used?
3)Name two gasses which causes greenhouse effect?
4)Define weathering and write the different means of weathering?
5)Name the various organisms involved in the nitrogen cycle?
6)What are the three ways by which carbondioxide is returned back to atmosphere?
7)What does the smog in an area indicates?




plssss answer all these questions because I have exam tommorow and Ihave to prepare only these questions, the I am done studying...

Answer 1

3) carbon dioxide, nitrogen, oxygen