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Plants produce _______ during the first stage of photosynthesis and because it is not used or needed in the second stage, it is considered to be a byproduct.

User Ionescho
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Answer:

oxygen

Step-by-step explanation:

In the first reaction, energy is used to split water molecules into hydrogen and oxygen. The hydrogen is needed for the second stage

User Early
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1 vote

Answer:

Oxygen

Step-by-step explanation:

User MikeP
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