By the unequal heating of earths surface
Answer:
hope this helps
Explanation:
About 95 percent of the time, Down syndrome is caused by trisomy 21 — the person has three copies of chromosome 21, instead of the usual two copies, in all cells. This is caused by abnormal cell division during the development of the sperm cell or the egg cell.
Normal cells in the body follow an orderly path of growth, division, and death. Programmed cell death is called apoptosis, and when this process breaks down, cancer begins to form.
Look at the photo for reference if you still need help unless you haven’t gotten it yet.
As the plate gets pushed down it gets closer to the center of the earth so it melts. It is less dense so it rises to the surface, tension builds up, and forms a volcano - I am almost positive this is accurate
