Which of the following is a greenhouse gas or a gas, which can deplete the ozone layer?
1). As
2). Kr
3). C4H8
4). CH4
2. The Chipko movement is started by
3. What is the official name of IUCN?
5. Which of the following statements is/are correct?
6. Name the international treaty designed to protect the ozone layer from CFCs.
7. The conversion of a pond to a climax forest community is an example of
8. The order of succession in a lithosere or xerosere is