Answer:
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Explanation:
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Answer:
The only nonmetal in group 14 is carbon.
Explanation:
Answer:
That is the membrane of the cell
Explanation:
The cell membrane is made up of layers of protein and fat. It is made with a <em>phospholipid bilayer</em>. It allows some substances to pass into the cell while blocking others. This is known as <em>semipermeability</em>.
Answer: Amu is an atomic mass unit.