- The respiratory system takes in oxygen from the air
- The respiratory system transfers oxygen to the circulatory system
- Therefore, the respiratory system transports oxygen from the air to the circulatory system

- Blood is a vehicle for carrying oxygen from the lungs to the rest of the body
- Circulation the circulatory system transports blood throughout the body
- Hence, the circulatory system brings oxygen from the lungs to the rest of the body

- The respiratory system transports oxygen from the air to the circulatory system
- The circulatory system brings oxygen from the lungs to the rest of the body
- So, the respiratory system and circulatory system bring oxygen from the air to the rest of the body

- The respiratory system and circulatory system bring oxygen from the air to the rest of the body
- Cells are a part of the body
- So, the respiratory system and circulatory system bring oxygen from the air to the cells of a body

So, the respiratory system and circulatory system bring oxygen from the air to the cells of a body
Question: Which two body systems work together to transport oxygen to the cells?
Context: - Blood is a vehicle for carrying oxygen from the lungs to the rest of the body 
- Circulation the circulatory system transports blood throughout the body 
- The respiratory system takes in oxygen from the air 
- The respiratory system transfers oxygen to the circulatory system 
- Cells are a part of the body