B) She could add a extra chemical
Natural selection is what the process is called.I hope this helps.
This is called cephalization. In mammals, this cephalization occurs primarily in the head...brain, eyes, ears, mouth.
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A lake I would assume because lakes have a depth to where you cannot see so it’s deep and dark down in lakes!
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They are all Eukaryotes, with nucleus, and chromosomes. They also have membrane which demarcate part of the cytosol. In addition they lac cell wall.
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