Question

why blood is needed by all parts of the body

Answer 1

Explanation:

Blood brings oxygen and nutrients to all the parts of the body so they can keep working. Blood carries carbon dioxide and other waste materials to the lungs, kidneys, and digestive system to be removed from the body. Blood also fights infections, and carries hormones around the body.

Answer 2

 Blood is the fluid which transports digested food from small intestine to all parts of

the body.

 It carries oxygen from lungs to the cells of the body.

 It transports waste for removal from the body.