The heart, blood and blood vessels work together to service the cells of the body. Using the network of arteries, veins and capillaries, blood carries carbon dioxide to the lungs and picks up oxygen. From the small intestine, the blood gathers food nutrients and delivers them to every cell.
First they don't use oxygen, plants use the CO2 in the air and release oxygen out into the air after the plant used up the CO2
The answer is c. Phosphorus is not abundant in the atmosphere, it comes mostly from the land and ocean.Phosphorus cycle through the lithosphere, hydrosphere, and biosphere, but not the atmosphere. The reason for this is that phosphorus cannot be found in the gas state, unlike the carbon.
Answer:
This is because smoke inhalation quickly leaves an individual unconscious.
Explanation:
Inhaling smoke can quickly knock someone unconscious, so people don't wake up when their houses are on fire.
This is because the smoke takes the same path as the oxygen, towards the lung. Once there, the defense cells try to fight the smoke, the problem is that the lung cells are attacked and the smoke toxins are easier to act and cause different damages in the body. The main damage is that the body can no longer allow oxygen to enter, leaving the organs, including the brain, without the presence of this nutrient.
