It stops things floating off the floor.
It does have gravity, but it's gravity isn't as strong as our home plant, Earth.
Gravity is not "used". In gymnastics, gymnasts almost defy-gravity by flipping in the air but have no control of what gravity does.
"Relative gravity" is used more or less as a synonym for density; it bears no direct relation with "gravity" as such. So, you would have to specify, "specific gravity [or density] of what substance"."Relative gravity" is used more or less as a synonym for density; it bears no direct relation with "gravity" as such. So, you would have to specify, "specific gravity [or density] of what substance"."Relative gravity" is used more or less as a synonym for density; it bears no direct relation with "gravity" as such. So, you would have to specify, "specific gravity [or density] of what substance"."Relative gravity" is used more or less as a synonym for density; it bears no direct relation with "gravity" as such. So, you would have to specify, "specific gravity [or density] of what substance".
nothing
Gravity acts against aeroplanes and forward speed and lift are used to conquer gravity.
Isac Newton was the first person to experiment with gravity. He discovered Gravity by watching a apple fall from a tree in front of his home.
Earth has gravity rather than other planets.
Your question is ambiguous. Are you asking why gravity exists or is gravity or more to the point can Gravity/Magnetism be used as an energy source.
Gravity causes the less dense stuff to rise
Newtons
In baseball, every hit could be a home run without gravity. Of course, when you fall, it hurts.
gravity would be used in a sentence like this: The gravity of the Earth is a very important part of life.