The heavy bombardment was a time in which Earth was struck by many ________,which added ________ and kept the surface from cooling.
A)meteorites;heat
B)meteorites;iron
C)comets;ice
D)asteroids;silica

Question

Quizplus · Accepted Answer

The heavy bombardment refers to a period in the early history of the solar system where Earth was bombarded by meteorites. These meteorites added heat to the planet and prevented the surface from cooling. Therefore, option A (meteorites; heat) is the best choice.

The Heavy Bombardment Was a Time in Which Earth Was