D. Losing some of its fertility because of overgrazing
Answer: The speed of the earth as it travels around the sun is 67,000 m / ph (107,000 km / h).
Explanation:
The orbit around the sun forms an ellipse and it takes approximately 365.25 days to fully around the orbit, because of that on earth the seasons are experienced throughout the year, as the earth recedes or gets closer to the sun. In addition to the orbit around the sun, the earth rotates on its own axis in about 24 hours giving rise to day and night.
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