So the independent variable is the thing that is changed in an experiment and you want to change the amount of rainfall the cactus gets as the hypothesis is about rainfall so the answer would be c). Hope this helps :)
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➷ It would be D. 25 degrees. This is because there was the highest oxygen flow at this temperature meaning that the rate of photosynthesis was higher.
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Answer:
i need more info to do it
Explanation:
