What is the force that pulls all objects to the earth?

GRAVITY...

2nd answer:

The force that pulls all objects toward each other is gravity. The earth exerts the force of gravity on you, and you exert the force of gravity on the earth ( or your couch, dog, etc).

We notice Earth's force of gravity because it is huge compared with the force of gravity of our bodies .... or the force of gravity of our Bowling balls, and so forth.