Question

Q9. Why is blood needed by all the parts of a body?
Q10. What makes the blood look red?
Q11. Describe the function of the heart.​

Answer 1

Answer:

1.To transport the oxygen and other substances to whole body

2 hemoglobin made blood look red

3. Heart pumps the blood

Answer 2

Answer:

9 ) Blood brings oxygen and nurtients to all the parts of the body so they can keep working blood carries carbon dioxide and other waste material to the lungs, kidneys, and digestive system to be removed from the body blood also fight infection , and carries hormones around the body.

10) Human blood is Red because of the portein hemoglobin which contains a red coloured compound called heme that's curcial for carrying oxygen through your bloodstream that's Why blood turns bright cherry red when oxygen binds to its room with out oxygen connected , blood is a darker red colour.