Answer:
Answer: Plains occur as lowlands along the bottoms of valleys or on the doorsteps of mountains, as coastal plains, and as plateaus or uplands. ... Plains may have been formed from flowing lava, deposited by water, ice, wind, or formed by erosion by these agents from hills and mountains.
The EARDRUM is a thin membrane dividing the outer ear from the middle ear.
Answer:
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A. at the same time that Earth formed
Explanation:
Geologists think the earth's continents began to form about the same time the earth was formed.
Most of the rocks on the continental crust are about the oldest that been used to date the age of our planet.
- Oceanic plates are relatively very young as they are formed at spreading centers and destroyed at convergent margins.
- Continental masses have very high absolute ages.
- The oldest rock on earth such as the Kabala Gneiss have been dated to be about 3 billion years.
- Other rocks have yielded ages close to the formation of the earth.
- We can conclude that the continents began to form immediately after the earth was formed.
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Radiometric dating brainly.com/question/7022607
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