The amount of organic matter stored by green plants in a unit time and area is called
Productivity
Net primary productivity
Gross primary productivity
Primary productivity
The transfer or energy from organisms to organisms in a natural community establishes
In a biotic community, primary consumers are
Name any two organisms which can occupy more than one trophic level in an ecosystem.
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”.
If plant (producers) of an ecosystem die, then the system