Q: Which of the following adds/add carbon dioxide to the carbon cycle on the planet Earth?
a) Volcanic action
b) Respiration
c) Photosynthesis
d) Decay of organic matter
The Correct Answer is 1, 2 and 4 only.
- Producers remove the carbon dioxide from the atmosphere and hydrosphere through the process of photosynthesis. They convert carbon dioxide to glucose. Hence, Statement 3rd is wrong.
- The process of respiration releases carbon dioxide back to air or water (aquatic ecosystem). Hence, Statement 2nd is correct.
- Decomposers release carbon stored in bodies of dead organisms back to the atmosphere. Hence, Statement 4th is correct.
- Volcanoes emit carbon dioxide in two ways: during eruptions and through underground magma. Hence, Statement 1 correct.
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