Neutrons + Protons = Atomic mass
8 + 9 = 17
Atomic Mass = 17
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One major advantage with the use of renewable energy is that as it is renewable it is therefore sustainable and so will never run out. Renewable energy facilities generally require less maintenance than traditional generators. Their fuel being derived from natural and available resources reduces the costs of operation.and alternative energy is a vital group too
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Cells have many structures inside of them called organelles. These organelles are like the organs in a human and they help the cell stay alive. Each organelle has it's own specific function to help the cell survive. The nucleus of a eukaryotic cell directs the cell's activities and stores DNA.
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Humans have to breathe continously even when you sleep because your body needs oxygen constantly. your body does not stop working when you sleep.
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