Biology, 30.03.2021 17:00 jojo77789

Students hypothesized that water pollution affects the growth of fish. In an experiment, they added the same amount of food to 2 ponds polluted by fertilizers and industrial waste. They measured fish growth and found that most fish grow slowly in each of these environments. Why is their conclusion not reliable?

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Students hypothesized that water pollution affects the growth of fish. In an experiment, they added...