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Biology, 22.11.2019 21:31 Jasten

What is ozone? *
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(03) gas in the atmosphere that can protect the earth
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high density metals that can be harmful to the environment
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earth's temperature slowly rising due to large amount of co2 emissions
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any form of precipitation that is acidic and falls to the ground

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What is ozone? *
o
(03) gas in the atmosphere that can protect the earth
o
...
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