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Answer Key
Grade 7 Science: Human Impacts on Ecosystems & Biodiversity
1.
the variety of living things in an area or on Earth
2.
a benefit people get from healthy ecosystems
3.
Answers vary: clean water, pollination, flood control, food
4.
a change caused by people that affects living things or their environment
5.
reduction or destruction of places organisms need to live
6.
it can harm organisms, reduce habitat quality, and lower species variety
7.
actions that help repair damaged ecosystems
8.
a planned action meant to reduce harm or protect biodiversity
9.
variety of living things in an area or on Earth
10.
benefit people get from healthy ecosystems
11.
actions that help repair damaged ecosystems
12.
reduction/destruction of places organisms need
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