Why would the biological explanation of the carbon dioxide cycle be incomplete without atmospheric oxygen?
Answer and explanation
Correct answer: Because respiration uses oxygen and releases carbon dioxide
Atmospheric oxygen is linked to the biological carbon cycle through aerobic respiration. Plants, animals and many microorganisms use oxygen to oxidise food molecules and release energy; carbon dioxide is produced as a by-product and returned to the atmosphere. Photosynthesis works in the opposite direction by taking in carbon dioxide and releasing oxygen, so the two gases are biologically connected. Option B confuses chemical identity with colour, C is false because oxygen is abundant in air, and D is plainly incorrect.
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What is the correct answer to this question?
Because respiration uses oxygen and releases carbon dioxide
Why is this the correct answer?
Atmospheric oxygen is linked to the biological carbon cycle through aerobic respiration. Plants, animals and many microorganisms use oxygen to oxidise food molecules and release energy; carbon dioxide is produced as a by-product and returned to the atmosphere. Photosynthesis works in the opposite direction by taking in carbon dioxide and releasing oxygen, so the two gases are biologically connected. Option B confuses chemical identity with colour, C is false because oxygen is abundant in air, and D is plainly incorrect.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Bills of Exchange.
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