Explain all 4 why and why not

Dear student,

Q18.
The correct option is (a) Amount of CO2 fixed.
Towards changing global environment, the terrestrial primary production acts as a key indicator of ecosystem functioning. Terrestrial net primary production refers to the net amount of carbon captured by plants through photosynthesis per unit time over a given period Thus terrestrial primary production respond to climate change and increasing atmospheric CO2 .

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‚Äč
 

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