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nirvana33 [79]
3 years ago
8

Johannes wants to know whether soil, water, or both are needed for plant growth. He chooses to conduct experiments on a willow t

ree for five years to answer his question. How can his experimental methods be changed to improve his experiment?
Biology
1 answer:
Orlov [11]3 years ago
7 0
He needs to use a larger sample size  <span>to improve his experiment.</span>
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