Without it, everyone would have to provide their own food and shelter.
Answer: Hello, Its number 1 Object #1 is an asteroid, and Object #2 is a moon.
Explanation: Its number one because a asteroid is a rock and a moon is made up of rock and orbits a planet witch is Earth
Yes it is a reliable source
Explanation: it shows the earth all in one. Makes it easier to study
Answer:
The Orpheus theory, which says that a planet-sized body once collided with Earth and that it sent some of the material into orbit, forming the moon.
They both orbit around the sun. They both have moons, rings, and colored bands. They both have gas giants.