4. The heart and lungs support each other to allow distribution of nutrients and oxygen to all parts and removal of carbon dioxide as a waste product in the body. 5. or are more body movements The cardiac heart muscles contracting involuntarily. 6. Activities that demands decreases pulse rate and the lungs requires less air or oxygen supply. 7. When a person breathes or inhales (takes in oxygen), the diaphragm contracts or moves downward and the chest cavity enlarges. 8. Drinking too much alcohol and smoking is good for the heart and lungs. 9. The chest cavity or lungs gets smaller as the person exhales or breathe out carbon dioxide. 10. Good habits can help prevent the occurrence of heart and lung problems.


true or false po thank you..​