Answer:
The circulatory system or vascular system is an organ system that helps in the transport of the blood from and to the heart. The blood transport also takes oxygen, nutrients, hormones, and other components from the heart to the various part of the brain with the help of the arteries and carry waste such as carbon dioxide to the heart in veins.
The oxygenated blood enters in the left atrium and moves to the left ventricle to the aorta and starts its journey to the body whereas deoxygenated blood enters in the right upper chamber or right atrium of the heart and pump to the right lower chamber and to the lungs to carry the oxygen again. This process is a continuous process.
The answer would be 36, you just fill in what you know and solve the problem.
When people don't know how to drive the boat correctly and they loose control.
Rose bush because not many animals eat rose bushes
They break down the organic matter that has died so that the nutrients stored with in it can be reused.