I am not sure but here is a link to help you :)
https://www.ncbi.nlm.nih.gov/pubmed/22322095
Explanation:
Velocity refers to how fast the air is moving in distance per unit of time. While pressure is the measure of force applied on an area.
The circulatory system is made up of blood vessels that carry blood away from and towards the heart. Arteries carry blood away from the heart and veins carry blood back to the heart. The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.
Answer:The cell membrane controls the movement of substances in and out of cells and organelles. In this way, it is selectively permeable to ions and organic molecules.
Explanation: