Answer:
its not actually proven its just a hypothesis because they can't dig that deep because of the pressure
Answer:
All samples of a given chemical compound will be composed of the same elements in the same proportion.
Explanation:
The law of constant composition or definite proportions states that "all pure samples of the same chemical compound contain the same proportions of the elements by mass". For example, every time water H₂O forms, it would always have the same proportion of hydrogen and oxygen.
Energy and mass have not been created, the water has simply been changed to a different form, but it is still present, and could be condense down into the same form with the same mass.
