Answer:
it has to be b because of the other ones are wrong
The best answer for this question would be:
2. Cosmic Background Radiation
The Cosmic Background Radiation are when the heat of a planet is measured by the left over heat of it. This is based on the “Big bang Theory” wherein the planets were formed because it was once a very hot radiation.
<span>
</span>
The closer you get to the city the higher buildings get such as apartment buildings due to price of land
the process by which Earth makes heat is called radioactive decay. it involves the disintegration of natural radioactive elements inside Earth. ex; uranium is a special kind of element because when it decays, heat is produced from it
