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12.Ecosystem
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Choose correct sentence for carbon cycle.
A In the composition of living organisms, carbon constitutes $39\% $ of dry weight of organisms and is next only to water.
B Fossil fuel not represent a reservoir of carbon
C According to one estimate $5 \times 10^{13}\ kg$ of carbon is fixed in the biosphere.
D Rapid deforestation and massive burning of fossil fuel, for energy and transport have significantly increased the rate of release of carbon dioxide into the atmosphere.
Solution
Solution is Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
Standard 12
Biology
