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1
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material (as waste food) that has been thrown out
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2
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when the environment is contaminated, or dirtied, by waste, chemicals, and other harmful substances
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4
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Gases that come from an engine as waste products.
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6
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Smoke that come out of a factory, giving out harmful fumes.
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8
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All the physical surroundings on Earth
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1
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The average surface temperature on Earth is slowly increasing
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3
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a way to reduce the amount of garbage that is thrown away
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5
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to use something more than once
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7
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garbage bing thrown out into public areas
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9
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to make a number smaller
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