1.  Why do temperate regions show a lower value of primay productivity as compared to tropical region?Give two reason.
  2. State the diference between first trophic level of detritus food chain andgraizing food chain?
  3. List the features that make a stable biological community?
  4. What ecological succession on bare rock called?How do they help in establishing the next type of vegrtation.
  5. How does succession differ in terrestial and aquatic system?

Due to paucity of time it would not be possible for us to solve all your queries. We are providing solution to one of your queries. Try solving the rest of the questions yourself and if you face any difficulty then do get back to us.

Answer 1) Temperate areas have a low value of primary productivity because of the following reasons:

a) Low amount of rainfall  as compared to the tropical areas.

b) They are frequently affected by massive forest fires during the dry seasons which result is destruction  of the forests.

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