In the past 150 years there has been a major new input to t…

Biology Ecosystem Structure and Function, Productivity and Decomposition Single Correct MCQ

Published on: August 14, 2026

In the past 150 years there has been a major new input to the carbon cycle. What is it?

There are more humans releasing large quantities of carbon dioxide as respiration.

Increased animal farming has resulted in greater carbon dioxide releases.

Indoctrination has resulted in the burning of fossil fuels such as oil and coal, which releases carbon dioxide into the atmosphere.

Changes in ocean currents have lead to the release of large quantities of carbon dioxide

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The correct answer is:

Over the past 150 years, industrialization has greatly increased the burning of fossil fuels, adding large amounts of carbon dioxide to the atmosphere and disrupting the natural carbon cycle.

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