During the evening, cold air from mountaintops rushes into the valleys below. Why does this occur? O A. Cold air is less dense than warm air, causing the cold air to sink. B. Global wind patterns cause this wind movement at night. O C. Cold air is denser than warm air, causing the cold air to sink. D. As clouds develop on the mountaintops, precipitation causes wind movement.​

it's     c       this is a cell (b) with a nucleus (c) containing dna (a). the dna is organized into chromosomes (d). a section of the chromosome that codes for a trait is called a gene (e).

they fuse to form they have half as many chromosomes as a somatic cell of the same individual. b

and after water is usually warmed by the sun the water temperature raises and then evaporates .

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