Answer:
i think correct answer is b
Earth has been cooling since its formation, if this is the case, why is it still hot inside?
A Peridotite xenoliths
B Planetesimals crashing into each other
C Radioactive decay
D Seismic waves
Answer:
Siesmic waves
Explanation:
What's responsible for the formation of sunspots in the photosphere? please help
Nuclear fusion
Earth's magnetic field
The sun's magnetic field
Gravity