For an atom to be electrically neutral the number

For an atom to be electrically neutral, the number of protons and electrons must be the same

Explanation: if the number of protons and electrons are the same, then the atom will be electrically neutral. For example if an atom have 5protons and 5electrons, then +5 protons will cancel out - 5electrons making the net charge of the atom to be zero(neutral)

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answer: they produce more slow than unicellular organisms.