Answer:
The reasons that cities boomed during the Middle Ages are more employment opportunities, increased trade, and growing interest in culture and art.
Answer:
Generating energy that produces no greenhouse gas emissions from fossil fuels and reduces some types of air pollution.
Diversifying energy supply and reducing dependence on imported fuels.
Answer:
True
Explanation:
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The use of CFCs <span>does not contribute to increased air quality. </span>
Answer:
The answer would be contamination of groundwater.
Explanation:
