Rate of production of organic matter by producers per unit time and area is

Which one of the following ecosystems has the highest annual net primary productivity?

The biomass available to herbivores and decomposers is known as:

Net primary productivity is utilised by

The amount of energy available at the secondary consumer level is referred to as which type of production?

Assertion : Net primary productivity is gross primary productivity minus respiration.
Reason : Secondary productivity is produced by heterotrophs.