ya the correct answer is B.
The E-coli bacteria is the correct answer
Answer:
C.
Zebras depend on soil to grow grass, which the zebras eat.
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The best answer would be the first statement. The first sentence which is 'water pollution causes a decrease in fish populations in a river.' illustrates how human <span>activities can most directly change the dynamic equilibrium of an ecosystem.</span>
The answer is C because you're reusing something for something else
