Environmental                      is one of the greatest and most urgent problems in modern times.
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                     should make efforts to preserve the environment for the sake of themselves and their children.
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protect -> …………….
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pollute -> ………………….
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Global warming has accelerated  and had a negative effect                 .
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You can take the bus as a(n)                    to driving a car.
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Linda said (that), "Environmental pollution is an impact of human activities on the environment."
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Mai said (that), "The rising sea level is a product of global warming, a natural phenomenon. The only unnatural thing about global warming is the accelerated rate at which it is happening."
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Mary said (that), "Loud and annoying sounds from innumerable vehicles in the highway nearby cause noise pollution."
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Tony said (that), "The disposal of untreated sewage in rivers and oceans leads to water pollution."
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