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7. Cells have different shapes because they do different things. ... The shapes of cells have evolved to help them carry out their specific function in the body, so looking at a cell's shape can give clues about what it does. Neurons are cells in the brain and nervous system.
8. When the Poly Pack is filled with the Pulses, a electrostatic force of attraction is created between the Poly pack and the Pulses. → When the Poly Pack is emptied, some pulses remains stuck due to the Electrostatic Force only. → This Force attracts the Oppositely Charged Poly Pack Molecules and the Pulses.
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