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B. In the twentieth century alone, the world population grew by more than 5 billion people.
C. Population grew slowly until the eighteenth century because death rates were higher.
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Answer:
C) They believed Earth to be much younger than current estimates.
Explanation:
- The proponents of the 18 and the 17th centuries believed that the earth was shaped by a strong and a violent forces such as the erosion that created the earth's geologic features and had a recent origin.
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