When oil and water are mixed, two separate layers form. Each
layer is called a(n)

it’s called a phase

Explanation: because they do not mix evenly instead they form two separate layers.

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answer: cellular respiration takes in food and uses it to create atp, a chemical which the cell uses for energy. usually, this process uses oxygen, and is called aerobic respiration. it has four stages known as glycolysis, link reaction, the krebs cycle, and the electron transport chain.