problem 1) Define Environment. Describing the scope of environmental science, describe why is it significant to study environmental Science?   

problem 2) Describe the environmental issues and challenges that we face today at national as well as the global level. Do you think that environmental issues in developed countries differ from those in the developing countries? Justify your answer.

problem 3) The characteristics exhibited by a community are different from those of the individual populations. Briefly describe what characteristics organisms show at these two levels.

problem 4)a) Sun is primary source of energy for the earth. What is the fate of solar energy when it reaches the earth?   

b) What are green house gases? How do these contribute to increase the temperature of the earth?

problem 5) prepare a short note on composition and structure of Atmosphere.   

problem 6) Describe the following terms in brief.   

1) Abiotic factors

2) Ecofeminism

3) Anthropogenic Activities

4) Saprophytes

5) Fixation

6) Autotrophs

7) Ecological Pyramid

8) Predation

9) Soil Erosion

10) Global Warming