Answer:
Gravity is the force that keeps us standing. It keeps us from floating, like you do when you are in space, away from gravity.
Tidal Force - The tidal force is a force that stretches a body towards and away from the center of mass of another body due to a gradient (difference in strength) in gravitational field from the other body
Hopefully this helps!!! ;)
That would be Artificial Selection.
by assembling large amounts of information in a single location
Working a side job at nights or on the weekends