What was the largest single source of air pollution around the world by the 1990s?
a. meta sm...
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History, 18.10.2019 08:30 payshencec21
What was the largest single source of air pollution around the world by the 1990s?
a. meta smelting,
b. waste incineration,
c. auto emissions,
d. chemical emissions
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Answers: 1
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