Where molecules pass through a semipermable membrane from a less concentrated area into a more concentrated one.
Because when the air cools hot air rises and so does the moistier and then it condenses and produces clouds which produce rain
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I think it A because Cyanobacteria absorb co2 from the atmosphere and then release oxygen To the atmosphere
Hormones because if you think about it. Vertebrates must have backbones and mammals have them. And, humans are basically mammals. And the glands secrete hormones.
