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Basically the Earth is layered because of gravity. The earth formed in the molten state. The liquid iron which is very dense fell to the center. The rest of the earth is made up of silicate materials with SiO2 being the main component.
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Answer:
It starts as rain and freezes in the air.
Explanation:
Sleet is that form of precipitation that freezes down in air or after the contact with the earth due to extreme low temperature in a region. For example, sleet is common in Tundra region like Alaska and Northern Canada.
An economy based on trade
Answer:
Volume
Explanation:
Volume is the quantity of three-dimensional space enclosed by a closed surface, for example, the space that a substance or shape occupies or contains