Which of the following statements is/are correct?

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A All green plants can prepare their own food
B Most animals are autotrophs
C Carbon dioxide is not required for photosynthesis
D none of the above

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Answer: A. All green plants can prepare their own food

Green plants have chlorophyll, so they make their own food by photosynthesis. Most animals are heterotrophs, not autotrophs, and carbon dioxide is a raw material needed for photosynthesis, so the other two statements are wrong.

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Which of the following statements is/are correct?

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