It keeps us from flying into outerspace.
A mountain is <em>not </em>a human feature, rather it is a geological feature of the Earth's crust most commonly found near areas of continental plate collision.
The answer is: [B]: "meandering" .
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The statement; “The comet cools down and begins to glow brightly as a result of this decreased temperature.” is considered false. Study shows that comets can be seen because their comas and tails reflect the light from the sun or would usually glow as they absorb energy from the sun. Comets are provided with energy from the Sun , so its movement is always away from the Sun.
