Mass transit can help reduce air pollution in urban cities because there are fewer cars on the roads, creating less pollution.
Answer:
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Waves traveling through the inner core<span> go faster than those throughthe </span>outer core<span>.</span>
Answer:
(look at the explanation below)
Explanation:
A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke. Mutations can occur during DNA replication if errors are made and not corrected in time.
