Which of the following adds/add carbon dioxide to the carbon cycle on the planet Earth? (1). Volcanic action (2). Respiration (3). Photosynthesis (4). Decay of organic matter Select the correct answer using the code given below.

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CollectorBabu · Accepted Answer

Correct Answer: 1, 2 and 4 only. Carbon cycle is biogeochemical cycle which exchanges carbon that gets released from ecosystems in shape of carbon dioxide gas which takes place in both plants and animals which breaks carbon organic molecules into carbon dioxide gas. Option A is correct as Volcanic action results in eruption of large amount of volcanic matter and carbon dioxide. Option B is correct as Respiration in humans and animals intakes oxygen and releases carbon dioxide. Option D is correct as Decay of organic matter results in production of carbon dioxide because of bacteria. Option C is incorrect as photosynthesis takes carbon dioxide and releases oxygen in air and did not add carbon dioxide in carbon cycle on planet Earth.

Which of the following adds/add carbon dioxide to the carbon cycle on the planet Earth? (1). Volcanic action (2). Respiration (3). Photosynthesis (4). Decay of organic matter Select the correct answer using the code given below.

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