asked 77.6k views
10 votes
Which research question is most effective?

A. How did natural gas affect the ozone layer in 1975?

B. How do fossil fuels affect the atmosphere?

C. When were fossil fuels first discovered?

D. What are fossil fuels?

1 Answer

8 votes

A. How did natural gas effect ozone layer in 1975?

answered
User Sharik
by
8.1k points
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