3. Why is it important to promote healthful habit for our organs? To
A. have a happy personality.
B. make our organs function properly.
C. avoid stress.
D. keep our body away from injuries.
4. When you exhale, how does the diaphragm behave as you breath in?
A. relaxes B. contracts C. sinks D. expands
5. Which of the following happens to air during the process of breathing?
. air moves from area of higher pressure to an area of
Jesser pressure
air moves up and down
air gets warm
air gives off oxygen
Rico touched something very hot. He moved his​