How do biotic and abiotic factors affect crop production ?

Why abiotic factors are important?

Give an account of factors affecting transpiration.

Explain the factors affecting rate of a reaction.

Write four major abiotic factors.

Sometimes due to biotic /abiotic factor the climax remain in a particular seral stage (pre climax) without reaching climax. Do you agree with this statement? If yes give a suitable example.

Define Productivity. What is primary productivity? Give brief description of factors that affect primary productivity.

What are the factors affecting the rate of diffusion?