The Mesosphere is the layer of the atmosphere that protects the Earth from meteoroids. It is also the coldest layer of the atmosphere. Below it is the stratosphere and above it is the thermosphere.
B. Mesosphere Explanation: The Mesosphere is the layer of the atmosphere that protects the Earth from meteoroids. It is also the coldest layer of the atmosphere. Below it is the stratosphere and above it is the thermosphere.
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