Gas and oil from the dead creatures, the gas, and oil are trapped under layers of rock use the idea of density to explain why the gas is on top of the oil

Gas is on top of oil

Explanation:

Gas is less dense ( smaller density ) than oil which is more dense. Since density is directly proportional to mass and inversely proportional to volume, gas will occupy a larger space than oil.

The larger space occupied is the space above the mixture of oil and gas, hence gas is above oil

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge