Biology, 20.10.2020 20:01 andybiersack154
Darwin's experiments are just one way to study phototropism. a student wants to investigate the effects of phototropism in bean plants. she places a light source above one plant, at a forty-five degree angle to another, and at a ninety-degree angle from the third.
What is her independent variable?
What is a hypothesis she might write for her experiment?
Thank you
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