Why does Earth have a magnetic field?

A. Due to the Earth's liquid outer core
B. Due to the abundance of different atmospheric gases
C. Due to the proximity to the Sun
D. Due to the types of rocks found in the lithosphere


Answer: A

Environmental & Atmospheric Sciences

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A. hydrolysis B. spontaneous combustion C. dissolution D. physical weathering

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Indicate whether this statement is true or false

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Which of the following is the term for the heat transport that occurs when a hot air balloon is able to rise from a heat source below?

A. conduction B. radiation C. latent heat D. convection

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