7. What organ of the body carries oxygen?
at The hart
b. The blood
c. The lungs
d. The brain
8. Which of the following will likely to happen if the body cells get enough supply of
oxygen?
a. The body cells will die.
b. The body cells will survive.
The body cells will become weak.
d. The body cells will become inactive.
9. How can you keep your heart strong?
a. Smoking
b. Eating fatty foods
c. Eating heart-shaped candy
d. Enough rest, proper diet, and regular exercise
Which of the following is the function of the nervous system?
a. Digest food
b. Responsible for taking in oxygen.
c. Transports nutrients to the body.
d. Controls and coordinates all bodily activities.​