The human body has many cells that are deep inside the body. for this reason, the
human body requires

most recent estimates put the number of cells at around 30 trillion

Explanation:

cells are the basic structure of all living organisms

The answer is: That the human body requires the continued reproduction of the different cells of the organism necessary to remain alive.

Explanation:

Cells are the life units with the capacity to reproduce by themselves smaller than they exist.

Humans have about two hundred different cell types, which is linked to different functions in each cell type.

But the cells do not work alone but those that have similar functions are grouped in tissues, and these in organs, and all work coordinated, in a team, with a single objective: to keep us alive.

The answer is: That the human body requires the continued reproduction of the different cells of the organism necessary to remain alive.

yes, because even though a theory has a  lot of evidence to support it, it is not always true