What determines how far south the cold air from the north pole travels?
a. the jet stream
b. the gulf stream
c. the polar easterlies
d. the trade winds

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