In the development of a cancer cell, the formation of new blood vessels is called Angiogenesis, option B. When tumors are present in the body, circulation and the distribution of nutrients in the body is altered; thus, resulting in different kinds of disorders associated with cancer. With the presence of cancer, these tumors need more nutrients to spread and grow, which results in the formation of more blood vessels.
They return nutrients from waste or dead organisms back into the ecosystem to be recycled.
Scientist are still trying to find out it's a theory atleast I think it is
