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Which of the following is not caused entirely or partially by human activities? Updated 1 hour ago: A. The greenhouse effect B. Global warming C. Ozone D. Smog

Which of the following is not caused entirely or partially by human activities? Updated 1 hour ago: A. The greenhouse effect B. Global warming C. Ozone D. Smog
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23 votes
Which of the following is not caused entirely or partially by human activities?

Updated 1 hour ago:
A. The greenhouse effect

B. Global warming

C. Ozone

D. Smog

asked
User Bharti Ladumor
by
8.5k points

1 Answer

0 votes
C. I’m pretty sure the answer is Ozone.
answered
User Bertil Chapuis
by
6.9k points
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