Question

The three waste products that the lungs secrete are___, ___and ___.

• A. carbon dioxide
• B. heat and moisture

Answer 1

Lungs:

1. Respiration is the process in which digested food reacts with oxygen and releases energy.
2. Waste products are also produced by respiration.
3. The respiratory organs of humans are a pair of lungs.
4. In respiration, food is broken down into carbon dioxide and water in the presence of oxygen by releasing oxygen.
5. Some amount of released energy is often converted into heat.
6. The waste materials produced in lungs are carbon dioxide, heat and water.

Final answer:

The three waste products that the lungs secrete are carbon dioxide, heat, and moisture.