Answer:
The force that pulled the dust and gases together to form Earth is primarily the force of gravity. As the dust and gas particles came together under the influence of gravity, they began to collide and stick together, gradually forming larger and larger clumps. Over time, these clumps grew into planetesimals, which in turn collided and merged to form proto-Earth. This process of accretion continued until the early Earth had enough mass and gravity to attract and hold onto an atmosphere.
Step-by-step explanation: