First episode release date was <span>February 27, 2012</span>
1) carries food and oxygen to the different cells of the body; 2) carries body wastes away; 3) protects the body from diseases; and 4) serves as the body's defense system.
it is one of the transport systems of the human body that is composed of the heart, the blood and the blood vessels. Its functions include: 1) carries food and oxygen to the different cells of the body; 2) carries body wastes away; 3) protects the body from diseases; and 4) serves as the body's defense system.
<span>An element is a pure substance that cannot be broken down into anything simpler by physical or chemical means.</span>
Answer:
There is a higher oxygen content in the air of the lungs than that of oxygen-depleted blood and a lower carbon dioxide concentration. This gradient of concentration causes gas exchange during respiration.
Explanation:
Answer:
Cells can die because they are damaged, but most cells die by killing themselves. Some cell death processes leave no trace of the dead cell, whereas others activate the immune system with substances from the dead cell.
Explanation:
