Which processes produced heat that contributed to the formation of Earth’s different layers? Check all that apply.

Ibelieve the answer is water and oil.

The answer is to spread the world of christ 

The correct answer is a. when they started making tools that will them in cultivating lands, they could raise crops and that made them attached to one place for a longer period of time. after that, they started domesticating animals and building their own permanent settlements that resemble the ones we have today.