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At the very center of the earth is the inner core, a 760-mile-wide ball of iron. Seismic studies show that it consists of iron crystals that are kept solid by tremendous pressure even though it is hotter than the surface of the Sun.
The strength of gravity at the center of earth is zero because there are equal amounts of matter in all directions, all exerting an equal gravitational pull. With such thick air, you eventually lose momentum and stop your yo-yo motion about the center of the earth. You would end up stuck floating at the center of the earth.
Explanation:
I majored in Biology
The asthenoshere is a highly viscous, mechanically weak, ductile region of the upper mantle of Earth. Parts of it are made from rock melt.
The flowing asthenosphere carries the lithoshpere of the Earth, including the continents on its back.
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D) Expressed in the stomach, but not in the cells of the small intestine
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largest of the three, positive charge, inside nucleus
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