On a global basis,the maximum productivity is shown by:

At which of the following levels can Net Primary Productivity $(NPP)$ be obtained?

Primary productivity varies from ecosystem to ecosystem. Explain.

The biomass available for consumption by the herbivores and the decomposers is called:

State whether the following statements are True or False:
$I.$ The total organic matter synthesized by the producers in the process of photosynthesis per unit time and area is known as gross primary productivity.
$II.$ Net primary productivity is the weight of the organic matter stored by the producers in a unit area/volume per unit time.

Net primary productivity is utilised by