MCQ
Endemism refers to:
- AThe distribution of species at a cosmopolitan distribution.
- BDistribution of certain species in a restricted area.
- CA common feature of all organisms seen in the biosphere.
- DA and B are correct.
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$I.$ The total organic matter synthesised 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