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Biology, 09.07.2019 18:20 cupcake686

Which of the following is an example of a natural source of air pollution?
a. burning coal and natural gas releases carbon dioxide.
b. plowing and harvesting crops releases dust particles.
c. blowing wind creates dust storms that release particles.
d. mining releases gases trapped beneath earth's surface.

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Which of the following is an example of a natural source of air pollution?
a. burning coal an...
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