This is known as active transport. This is usually used for cells to gain something that they already have a lot of, like glucose.
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It's A) The Earth's water would evaporate. This is because due to the smaller orbit, Earth would get closer to the sun; that would, in turn, raise the tempurature on the surface. This would cause the water on earth to evaporate much faster than it naturally does in the water cycle.
B because I need to do this thing too I asked my teacher and she said it was b
Homeostasis is the regulation of the internal environment of an organism.