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

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

Differentiate primary productivity and secondary productivity.

What is net primary productivity?

What is net primary productivity ?

Define net primary productivity.

Write the relationship between productivity, gross primary productivity, net primary productivity, net primary productivity and secondary productivity.

Write the relationship between productivity, gross primary productivity, net primary productivity, net primary productivity and secondary productivity.

Define Net primary productivity.

The biomass available for consumption to heterotrophs and the rate formation of new organic matter by consumers are defined as (a) gross primary productivity and net primary productivity respectively (b) net primary productivity and gross primary productivity respectively (c) gross primary productivity and secondary productivity respectively (d) net primary productivity and secondary productivity respectively.