Which gas is a raw material of photosynthesis?
Answer and explanation
Correct answer: D. Carbon dioxide
Plants take in carbon dioxide and water and release oxygen as glucose is made.
Answer: Carbon dioxide.
Why not the others: Oxygen: it is released by photosynthesis. Nitrogen: plants cannot use it directly. Hydrogen: it is not taken in as a gas.
Answer: Carbon dioxide.
Why not the others: Oxygen: it is released by photosynthesis. Nitrogen: plants cannot use it directly. Hydrogen: it is not taken in as a gas.
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