Before winter animals that hibernate often prepare by eating foods high in fat. how is this behavior ?

During hibernation, the animals don't eat anythingSo, when they are hibernating, those animals can get energy by burning the the stored fat from the fatty food and can survive until they wake from hibernation

The proton has a positive charge while the neutron has no charge they both make up the nucleus of the atom while the elections have a negative charge and surround the nucleus of the atom. the protons and electrons are used to calculate the atom's mass whereas the neutrons don't affect the mass

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