Body tissues grow by increasing the number of cells that make them up. Cells in many tissues in the body divide and grow very quickly between conception and adulthood. This process is called cell division. One cell doubles by dividing into two
the process of cell division and cell adaptation enable humans to develop from a single-celled organism to a complex array of cells that form a person.
Explanation:
one cell divides into 2 then 2 into 4 and so on until there are just approximately 37.2 trillion cells!!!
Oort cloud: a spherical region that surrounds the solar system, that extends from the kuiper belt to almost halfway to the nearest star, and that contains billions of comets
