Answer:
Stem cells are divided into 2 main forms. They are embryonic stem cells and adult stem cells. Embryonic stem cells.
Identical genes have the same genetic material and the same genes. So if they both have a disease it's likely that it's genetic.
1. Smoking
2. Weight
3. Alcohol
4. Drugs
5. Depression
Isaac Newton published a comprehensive theory of gravity in 1687. Though others had thought about it before him, Newton was the first to create a theory that applied to all objects, large and small, using mathematics that was ahead of its time.