The total annual productivity of the whole biosphere is:

The annual net primary productivity of the whole biosphere is approximately...

The rate of formation of new organic matter by deer in a forest ecosystem is called

Which ecosystem exhibits the maximum gross primary productivity?

The total rate of photosynthesis,including the organic matter used up in respiration during a definite period,is known as:

$A$: In secondary productivity,no new organic matter is formed.
$R$: It is only the utilisation of part of food manufactured by primary producers in the building of consumer biomass.