1. Which change is an environmental effect of building dams?
A) weed growth upstream
B...
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1. Which change is an environmental effect of building dams?
A) weed growth upstream
B) increased fertility downstream
C) increased water temperature upstream
D) sediment builds up downstream
2. How can humans increase the rate of endangered or extinct species?
A) reduce environmental impacts
B) build and populate more zoos
C) pass more laws about land use
D) introduce new predators to an environment
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Answers: 2
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