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8 November, 11:00

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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  1. 8 November, 11:50
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    The correct answer for the question that is being presented above is this one: "c. auto emissions." T he largest single source of air pollution around the world by the 1990s is cause by auto emissions. There are many cars run around the streets everyday.
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