ECOLOGY
ENERGY FLOW AND PRIMARY PRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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We are made of carbon.
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We release it into the atmosphere when we breathe.
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We release it into the atmosphere when using fossil fuels.
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All of the above.
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Detailed explanation-1: -Human activities have a tremendous impact on the carbon cycle. Burning fossil fuels, changing land use, and using limestone to make concrete all transfer significant quantities of carbon into the atmosphere.
Detailed explanation-2: -Humans play a major role in the carbon cycle through activities such as the burning of fossil fuels or land development. As a result, the amount of carbon dioxide in the atmosphere is rapidly rising; it is already considerably greater than at any time in the last 3.6 million years.
Detailed explanation-3: -Organisms play an important role in the carbon cycle in the following ways: Plants absorb carbon from the environment in photosynthesis and return it in respiration. Animals obtain their carbon by eating plants; they release carbon in respiration.