Answer:
Hope it helps!
Explanation:
The circulatory system consists of three independent systems that work together: the heart (cardiovascular), lungs (pulmonary), and arteries, veins, coronary and portal vessels (systemic). The system is responsible for the flow of blood, nutrients, oxygen and other gases, and as well as hormones to and from cells.
Creating good routines
find an appropriate study area
building brain power for studying
The answer to this is B. <<<<
I believe it's 4 cells in the first month.
