Cells that remove excess bone tissue after fracture repair are

The answer to this question would be osteoclast.

Osteoclast is a cell that has an enzyme that able to digest bone called collagenase. Osteoclast also able to secrete acid that will solve the bone mineral. The osteoclast is used to remove excess bone in the remodeling phase. The bone that removed will be turned into calcium and phosphate that released into the blood.

The soviet union beat the us to the first successful launch, with the october 4, 1957, orbiting of sputnik 1, and later beat the us to have the first human in earth orbit, yuri gagarin, on april 12, 1961. the "race" peaked with the july 20, 1969, us landing of the first humans on the moon with apollo 11

Just dont put scarce