If we shake the branches of tree, the fruits fall why
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becauae of the gravity

Explanation:

Gravity is the force by which a planet or other body draws objects toward its center. The force of gravity keeps all of the planets in orbit around the sun.

They proposed that gravity is actually made of quantum particles, which they called "gravitons." Anywhere there is gravity, there would be gravitons: on earth, in solar systems, and most importantly in the miniscule infant universe where quantum fluctuations of gravitons sprung up, bending pockets of this tiny space

gans

explanation:

vestigial organs (like your appendix) are organs that no longer serve a purpose.

i don't know that i agree with that but what's the question ?