Which of the following is NOT caused by plate tectonics?
Which of the following would reduce the amount of smog?
Which of the following is needed for hydroelectric power?
Which of the following can cause acid rain?
Renewable resources are resources that
Which items make up the most garbage produced by houses and businesses?
Most of our electricity comes from power plants run by burning
The layer of gases that surrounds the Earth and acts like a blanked is the
Which of the following contributes most to global warming?
Which of the following would reduce your ecological footprint?
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