7. The lungs are organs of breathing. They are also organs that help in excretion, How is this possible?
a. Breathing helps clean the blood that goes to the heart
b. The lungs remove waste from the blood as it circulates
C. Carbon dioxide is exhaled during the process of breathing
d. Oxygen is inhaled during the process of breathing
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Answer:
C
Explanation:
When you inhale (breathe in), air enters your lungs and oxygen from the air moves from your lungs to your blood. At the same time, carbon dioxide, a waste gas, moves from your blood to the lungs and is exhaled (breathe out). This process is called gas exchange and is essential to life