1. What are biogeochemical cycles? 2. What do you understand by fixation of nitrogen? How can it be achieved? 3. Write a short note on the phosphorous cycle. 4. Write a note on lentic and lotic water...

1. What are biogeochemical cycles? 2. What do you understand by fixation of nitrogen? How can it be achieved? 3. Write a short note on the phosphorous cycle. 4. Write a note on lentic and lotic water systems. 5 Give examples of different biotic components of a pond ecosystem.

6. Who are the producers, consumers and decomposers in a forest ecosystem?