Question

how is oxygen carried to each cell of the body​

Answer 1

Explanation
The oxygen in inhaled air passes across the thin lining of the air sacs and into the blood vessels. This is known as diffusion. The oxygen in the blood is then carried around the body in the bloodstream, reaching every cell. When oxygen passes into the bloodstream, carbon dioxide leaves it.
Pls mark me as the brainliest

Answer 2

Answer: When we breathe in oxygen, the red blood cells transport it around to every cell in the body a critical process that has far-reaching evolutionary consequences The advent of aerobic respiration, which added the oxygen-utilising tricarboxylic acid cycle and electron transport system onto anaerobic glycolysis, allowed aerobic organisms to extract 18 times more energy from glucose in the form of ATP.

Explanation:  Carbon dioxide must be expelled from the cells and the body. The lungs serve to exchange the two gases in the blood. Initially, organisms relied on diffusion to transport oxygen to their cells, an inefficient system that kept them microscopic in size. Then with the development of the body cavity came a primitive circulatory system involving the flow of interstitial fluid through the action of muscular movement; yet, body size remained small, as this system of circulation was limited in its effectiveness.

                                 Hope it will help you :)

                                              and

                                      Thank you........