Answer:
Here is basic information: "Stem cell therapy for the heart; several different types of approaches are being used to repair damaged heart muscle with stem cells. The stem cells, which are often taken from bone marrow, may be inserted into the heart using a catheter. Once in place, stem cells help regenerate damaged heart tissue
Explanation:
Answer:
a paper plane also known as and paper aeroplane in American English or paper aeroplane in British English is it toy aircraft usually a glider made out the single folded sheet of paper or paper boat a simple noise heavy paper plane truth like a dot is also known as paper
The mass extinctions that occurred 250 million years ago and 65 million years ago may have been due to gradual process or Catastrophic events.
I would select A because cells have to divide into smaller cells depending on where they are.