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Identify the true statement. Choose one: A. The pressure at the Earth's center is less than 300 times greater than normal atmospheric pressure. B. The temperature at the Earth's center may almost equal the temperature of the Sun's surface. C. The calculated density at the Earth's center makes scientists almost certain that the inner core is composed of diamond. D. The geothermal gradient is the rate of change in pressure with depth in the Earth.

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Answer:

B. The temperature at the Earth's center may almost equal the temperature of the Sun's surface.

Explanation:

Recent calculations indicate that the Earth's inner core is much hotter than previous experiments suggested (with a temperature of about 5000 degrees Celsius), since it can be at a temperature of 6000 degrees Celsius, almost as hot as the Sun's surface.

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