What is the correct order of levels of organization, from smallest to largest?
o organism → tissue → organ organ system → cell
o organism → organ system → organ tissue cell
O cell → tissue → organ organ system → organism
Ocell → organ organ system organism → tissue

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