Instructions
Read the questions carefully and answer them in the spaces provided. Use complete sentences where needed.
1. Respiration
a. What is respiration? Explain in your own words.
b. Name two organs involved in the respiration process of animals.
2. Digestion
a. What is digestion? Describe the process briefly.
b. What are two main organs involved in digestion?
3. Circulation
a. Explain what circulation means in the context of living organisms.
b. List one type of circulatory system that animals can have (e.g., open or closed) and give an example of an animal that has it.
4. Comparison
Using the table below, fill in the differences between the systems of respiration, digestion, and circulation.
| System | Function | Key Organs |
|---|---|---|
| Respiration | ||
| Digestion | ||
| Circulation |
5. Fun Fact!
Write one interesting fact you learned about any of the biological systems discussed above.