Earth has quakes, earthquakes, when the tectonic plates move. Therefore, tectonic plates do exist on earth.
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Answer:
San Joaquin Valley
Explanation:
San Joaquin Valley is one of the two large valleys of California. It is the southern one of the two, with the one north of it being the Sacramento Valley. This valley is located between the Siera Nevada Mountains on the east, and the Coastal Range on the west. It is a valley where the climate is predominantly semi-arid, thus it is naturally covered by grasses, which has contributed to the valley having very deep and fertile soil. Because San Joaquin Valley has fertile soil, it is heavily used for agriculture, so the majority of it is rural, with only few cities in it, none of which is actually a large city.
Answer:
The diamond is more than a billion years old.
Diamonds are the hardest natural substance on earth.
Diamonds are made of only one element: carbon.
Diamonds come in every color.
Scientists have discovered a planet that they believe is composed mostly of carbon, and is one-third pure diamond.
The doppler effect occurs for all types of waves
