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OpenStudy (anonymous):
When the combustion engine was invented it had many positive effects on society, but years later it has been discovered that the burning of oil and coal has one major negative effect on the environment. What is that negative effect?
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OpenStudy (anonymous):
It improves air quality.
OpenStudy (anonymous):
It uses renewable resources.
OpenStudy (anonymous):
It causes a hole in the ozone.
OpenStudy (anonymous):
It increases the greenhouse effect.
OpenStudy (anonymous):
no one wanna help me?
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