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Over the past 20 years, the major pollutants in our world have __________. a. decreased significantly b. increased significantly c. stayed at the same levels d. decreased slight…

Over the past 20 years, the major pollutants in our world have __________. a. decreased significantly b. increased significantly c. stayed at the same levels d. decreased slight…
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Over the past 20 years, the major pollutants in our world have __________.

a. decreased significantly
b. increased significantly
c. stayed at the same levels
d. decreased slightly

User Richard Downer
by
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1 Answer

5 votes
The most likely answer is B, increased significantly. This is so, because of the vast amount of cars, and factories, still in use.So, based upon the statistics and the levels of pollution all over the world, I would have to answer B.
User Sachin Prasad
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