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chapter 6
| Question | Answer |
|---|---|
| renewable resource | can regenerate if they are alive or can be replenished |
| nonrenewable resource | one that can not be replenished by natural process |
| acid rain | when compounds combine with water vapor in the air,they form drops of nitric acid |
| endangered species | whose population size is declining in a way that places in danger of extinction |
| ozone layer | relatively high concentraction of ozon gas |
| global warming | used to describe this incerase in the average temp. of this boisphere |