The Rocky Mountains is the largest mountain system in N.A
Answer:
According to the most widely accepted theory of the formation of the Moon,The Moon formed when a Mars-sized object collided with the Earth about 4.5 billion years ago('Giant Impact Theory').Consistent with the collision theory,the composition of the Moon is very similar to the Earth's mantle.
Explanation:
I think it may be the Great Basin Desert.
Answer:
yes
Explanation:
earthquake early warning system
