.Answer:
D. conservation of energy
Step-by-step explanation:
- It states that the total energy in an isolated system remains constant and is stable over a period of time as energy is neither destroyed it transform itself into other forms that heat up the earth and has kinetic and potential energy.
- Hence its the transfer of the mass-energy that interacts with the earth's air, water and sustains itself as the derived heat and light form. Thus no system exists without the supply of external energy