Answer:
heat from the decay of radioactive elements.
frictional heating, caused by denser core material sinking to the center of the planet
Explanation:
A bag is the indefinite article so i would guess c
Bilateral: Did you know The brain has bilateral symmetry?
2. to have bilateral hearing is very essential for sound locating.
3. she had no idea if this is actually true or not, but perhaps bilateral agreements aren't necessarily better.
Bipartisan: The political system of the United States has its bipartisan way.
2.They just need a few Republican votes so they can claim bipartisan support.
3.We had to finish a bipartisan project in order to submit the survey
Bisect: I had to bisect the orange in order to share with my sister.
2. we had to bisect a frog in our science class.
3. I had to bisect the honey melon if I wanted to remove the seeds.
