7. How does the great-impact hypothesis explain the differences in density between the Earth and the moon?
The moon was created from core material ejected in a natural nuclear explosion.
The moon came from elsewhere in the solar system.
The moon was formed from lighter elements contained within the solar nebula.
The moon was created from Earth's mantle and crust.

C) to ensure each new cell has an exact copy of the dna

Volcanoes make new rocks so not ahotspots are the the stuff that makes volcanoes mid atlantic ridge(mar cause i’m lazy) is a constructive plate boundary so it makes sense that new rocks would be found near it, also the mar is in the middle of the ocean so it fits the description deep ocean trench, umm, there’s no ocean trenches to where you’re goingso the mar is most likely the answeri wouldn’t trust me but hey why not