As the heart beats, it pumps blood through a system of blood vessels, called the circulatory system. The vessels are elastic, muscular tubes that carry blood to every part of the body.
Blood is essential. In addition to carrying oxygen from the lungs and nutrients to your body's tissues, it also takes the body's waste, including carbon dioxide, away from the tissues. This is necessary to sustain life and promote the health of all the body's tissues.
They must find food
they must find shelter
They are things your body cannot produce on it's own
Outdated plugins can cause disruption
Answer:
the chromosome are found in the nucleus of a body cell in pair