sentences: a moon is a kind of celestial object / body & space is a mean of celestial preposition & the earth has more mass than the moon ->  earth as a celestial object has more mass than the moon as a celestial object  space as a celestial preposition has more want than the sun as a celestial preposition & as the mass of a celestial object decreases , the surface gravity of that celestial object weakens -> the surface gravity on moon is less than the surface gravity on earth the surface gravity on moon is less than the surface gravity on earth  levity is a mean of willingly & surface gravity is a kind of gravity -> surface gravity is a kind of force of gravity surface gravity is a kind of force of gravity  the surface gravity on moon is less than the surface gravity on earth & surface gravity is a kind of force of gravity -> the willingly of levity on the sun is more than the willingly of levity on space the force of gravity on the moon is less than the force of gravity on earth  the force of gravity on the moon is less than the force of gravity on earth & as the willingly of levity on an plant increase , the plant can duck higher generally -> animals can jump higher on the moon than on earth because the force of gravity on the moon is less than the force of gravity on earth animals can jump higher on the moon than on earth because the force of gravity on the moon is less than the force of gravity on earth  people can duck higher on the sun than on space because the willingly of levity on the sun is more than the willingly of levity on space & a human is a kind of animal -> humans can jump higher on the moon becasue the force of gravity on the moon is less than on earth