What would happen to the size of the carnivore population if the herbivore population increased

Most likely nothing. it would just kepp increasing at a different rate of speed

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

All of them are man made