MediumBotany Ecosystem
+4 / -1
The annual net primary productivity of the whole biosphere is approximately:
A
170 billion tons
B
55 billion tons
C
115 billion tons
D
200 billion tons
Explanation
Despite the vastness of the oceans, the total annual NPP of the biosphere is about 170 billion tons (dry weight) of organic matter.
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Secondary productivity is the rate of formation of new organic matter by:
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