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Aboy jumps into a cold swimming pool and his body tempature goes down hus muscles ,blood vessels

Construct at least two possible hypotheses for the student’s experiment.

What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons