1. What are three U.S. ecosystems that need protection? How do you think humans have caused these...
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Question:
1. What are three U.S. ecosystems that need protection? How do you think humans have caused these ecosystems to become endangered?
2. What are three criteria used to evaluate whether an ecosystem is endangered?
3. What are the environmental effects of clear-cutting on steep mountain slopes? on tropical rainforest land?
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