Explain primary productivity and the factors that influence it.

What is primary productivity? Explain the factors effecting it.

What is net primary productivity?

List any two factors which influence growth.

What is primary production?

What is primary productivity? List two factors affecting it. What is the major difference between GPP and NPP?

What is primary productivity? Give brief description that affect primary productivity.

How are productivity, gross productivity, net primary productivity and secondary productivity interrelated?

Differentiate primary productivity and secondary productivity.

Justify the following statement in terms of ecosystem dynamics. "Nature tends to increase the gross primary productivity, while man tends to increase the net primary -productivity".

Name the law that states that the sum of allelic frequencies in a population remains constant. What are the five factors that influence these values?