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Q: Which of the following helps keep Earth's atmosphere in place ?
  • A. Gravitational force of the moon
  • B. Gravitational force of Earth
  • C. Rotation of Earth on its axis
  • D. Gravitational force of the sun
Correct Answer: Option B - Our atmosphere is a mixture of gases that surround of Earth. It is kept in place by the pull of Earth's gravity. Gravity is necessary in order to hold our atmosphere to the planet.
B. Our atmosphere is a mixture of gases that surround of Earth. It is kept in place by the pull of Earth's gravity. Gravity is necessary in order to hold our atmosphere to the planet.

Explanations:

Our atmosphere is a mixture of gases that surround of Earth. It is kept in place by the pull of Earth's gravity. Gravity is necessary in order to hold our atmosphere to the planet.