Which of the following produced significant amounts of heat during the early formation of Earth, which started approximately 4.5 billion years ago? (Select all that apply.) Check all that apply Radioactive decay in Earth's interior Exposure to the cosmic radiation from space Collision and compression of materials by gravity Sinking of the molten iron and nickel into Earth's interior Impacts of meteors and asteroids

Impact and pressure of material by gravity and this compression produces components crashing into one another and along these lines generation of tremendous measure of energy.

The second procedure that was likewise in charge of the generation of heat during the formation of the earth is the crash of earth with meteors and space rocks which was exceptionally visit during earth early history and the dynamic vitality of these bodies gets changed over into the heat energy during the impact.