Heredity or something like that I don’t speak English sorry
Depending on how good that species is at adapting to new environments that species of animals could adapt overtime, or die
Atomic number shows the number of protons in the nucleus of an atom.
Atomic weight shows the is an another term for atomic mass, which means <span>It is approximately equivalent to the number of protons and neutrons in the atom (the mass number) or to the average number allowing for the relative abundances of different isotopes.</span>
