Directions: Choose the letter of the best answer. Write your answer on a
separate sheet.
1. Why is respiratory system very important to the body?
a. It enables carbon dioxide to get into the body.
b. It consists of body parts that help the body receive oxygen.
c. It helps distribute carbon dioxide to the blood.
d. It enables the blood to circulate in your body.
2. How does oxygen in the air get into the blood?
a. though the nose
b. though the throat
c. though the mouth
d. though the tiny capillaries
3. What will happen to the cells of the body when there is absence of
oxygen?
a. The cells will continue to grow and multiply.
b. The cells will be inactive.
c. The cells will survive.
d. The cells will die.
4. How can you keep your heart strong?
a. eating heart-shaped candy
b. doing activities like playing outside, riding your bike, and swimming
c. smoking
d. sleeping 18 hours a day​


Note: wag naman po sanang useless ang answer and complete rin po sana tinaasan ko na po ang points sana hindi
Ty sa makakasagot