The Answer is second option (Tombouctou).
The Earth's geosphere is made up of iron, oxygen, magnesium, and silicon. All of these elements are chalcogens, or chemical elements.
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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