The definition of immunity is like living longI think
A because people can't see the seeds.
Answer:
The osteoblasts, which should have been building the new bone
Explanation:
Bones are the one of the types of connective tissues and have hard extracellular matrix. Osteoblasts are the cells that serve in formation of extracellular matrix of bones as these cells secrete collagen fibers and inorganic salts present in the matrix of bone. Hence, if a bone is not able to heal after fracture, osteoblast cells should be checked for their activity.
Answer: 3.friction
Explanation: friction is a force of resistance acting between objects in contact and tending to dampen their motion
