How much of the net primary productivity of a terrestrial ecosystem is eaten and digested by herbivores?

How much of the net priamary productivity of a terrestrial ecosystem is eaten and digested by herbivores ?

How much of the net primary productivity of a terrestrail ecosystem is eaten and digested by herbivores?

What is net primary productivity?

Productivity in terrestrial ecosystems is affected by

The net primary productivity of an ecosystem is :

Maximum net productivity in terrestrial ecosystem is:

Maximum net productivity in the terrestrial ecosystem is:

Maximum net productivity in the terrestrial ecosystem is in