ANSWERS
1. c) Carbon dioxide
2. c) The variety of ecosystems on the planet
3. b) Desertification
4. b) Industrial emissions
5. d) Chlorofluorocarbons (CFCs)
Read More: TEST NO. 94 (ENVIRONMENTAL SCIENCE)
6. c) Montreal Protocol
7. c) Toxins become more concentrated as they move up the food chain
KA8. c) Nutrients like nitrogen and phosphorus
9. a) Overutilization of shared resources leading to depletion
10. d) Hydroelectric power