Question

what is the main source of heat achieve by the earth​

Answer 1

Answer:

There are three main sources of heat in the deep earth: (1) heat from when the planet formed and accreted, which has not yet been lost; (2) frictional heating, caused by denser core material sinking to the center of the planet; and (3) heat from the decay of radioactive elements.

-sneha

Answer 2

Answer:

There are three main sources of heat in the deep earth .

1. Heat from when the planet formed and accreted, which has not yet been lost .
2. Frictional heating, caused by denser core material sinking to the center of the planet .
3. Heat from the decay of radioactive elements .