CSET Science - Life Sciences (215 & 217) Practice Questions - CSET California Subject Examinations For Teachers Science - Life Sciences (Subtest I 215+ Subtest II 217) Exam

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A student wants to determine whether the amount of light affects the rate of photosynthesis in elodea. Which variable should the student deliberately change between groups?

The intensity of light reaching each plant The number of bubbles produced per minute The species of aquatic plant used The temperature of the water bath

Correct Answer:

The intensity of light reaching each plant

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