The answer is B (speed up chemical reactions).
Hypothesis is what you think will happen before the experiment, it isn't necessarily backed up by any sources or evidence. A scientific law is the observation of a phenomenon and a theory is the explanation both can be used together to back each other up.
Onion is an underground crop and it have no involvement in the photosynthesis. So it have no chloroplast in their cell.
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-Payshence
Answer:
<h3><em>Between</em><em> </em><em>Dioxide</em><em> </em><em>and</em><em> </em><em>Ribonuse</em><em> </em><em>Acid</em></h3>
Explanation:
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