So you didn't provide any statements but I'll describe gravity for you and hopefully, it'll help.
Science: Gravity is the force that holds down objects and causes them to fall. It pulls down on an object, causing said object to fall or to remain in contact with the ground. Gravity is also what keeps the planets of our solar system in orbit of our sun and it keeps the planet's moon in orbit around the earth.
Gravity can also mean solemn importance, or seriousness of demeanor.
Hope this helps. :)
