In facilitated diffusion, substances move into or out of cells down their concentration gradient through protein channels in the cell membrane. Simple diffusion and facilitated diffusion are similar in that both involve movement down the concentration gradient.
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➷ Waves are commonly caused by wind. However, tides are caused by the gravitational attraction of the sun and moon on the oceans.
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Answer:
The top of the food web contains all the alpha predators
Explanation:
