Question

Which of Earth's early sources of heat are not major
contributors to Earth's present-day internal heat?

Answer 1

Answer:

(1) extraterrestrial impacts, (2) gravitational contraction of the Earth's interior, and (3) the radioactive decay of unstable isotopes.

Explanation:

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Answer 2

(1) Extraterrestrial impacts, (2) gravitational contraction of the Earth's interior, and (3) the radioactive decay of unstable isotopes are the sources of heat that are not major contributors to Earth's present-day internal heat.

What is heat?

Heat is the transfer of kinetic energy from one medium or object to another, or from an energy source to a medium or object.

(1) Extraterrestrial impacts, (2) gravitational contraction of the Earth's interior, and (3) the radioactive decay of unstable isotopes are the sources of heat that are not major contributors to Earth's present-day internal heat.

Learn more about the heat here:

https://brainly.com/question/13411214

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