Answer:
Organs are grouped into organ systems, in which they work together to carry out a particular function for the organism. For example, the heart and the blood vessels make up the cardiovascular system. ... On the right, a diagram of the circulatory system showing heart and blood vessels.
Explanation:
mitosis
Another name for cell division is "mitosis." If you study biology, you'll learn about cell division, when a cell divides into two smaller "daughter cells." During cell division, all the tiny elements of the cell also divide — including the cell's chromosomes, nucleus, and mitochondria.
Rocks on land are the major source of salts dissolved in seawater.