Which of the following is not a technological way of improving air quality?
Walking to work is one way of helping improve air quality.
The principal source of air pollution from volcanoes is _______.
Air pollution in US National Parks is affecting the environment in what way(s)?
Which of the following would most likely utilize a particulate control device?
Acid rain is the direct result of acid released by burning fossil fuels.
Wind, solar and geothermal power are called renewable energy sources because _______.
Which alternative energy source would be expected to be the least dependent upon the weather?
The principal limitation of wind power is unpredictability.
Driving cars lowers the pH of the oceans by _______.
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