The O-16 nucleus has a mass of 15.9905 amu, A proton has a mass of 1.00728 amu, a neutron has a mass of 1.008665amu, and 1amu is equivalent to 931 MeV of energy.
They are <span>Common Soil </span><em>Bacteria</em><span> Nematodes.
Hope this helps:)</span>