Can someone help me pls I'm so confused 2 Describe one negative and one positive effect that human activities have had on the ozone layer

3 Describe one negative and one positive effect that humans have had on acid rain.

4 Scientists think we should try to stop carbon dioxide levels rising. Why do they think this?

5 Describe two ways that we can stop the amount of carbon dioxide in the atmosphere rising

6 How could clouds and mirrors be used to stop Earth getting warmer?

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