Cells because most living things like plant life and humans are made up of cells and animals are made up of cells too!
You can get help structuring it, but you can't get someone to write it if it isn't your thoughts.
Answer:
No, The respiratory system does not work alone in transporting oxygen through the body. The respiratory system works directly with the circulatory system to provide oxygen to the body. Oxygen taken in from the respiratory system moves into blood vessels that then circulate oxygen-rich blood to tissues and cells.
Explanation:
Hope that helps!
As the world evolves, there is a change in the ecosystem, and with that comes the fluctuation. Organisms have have changing populations as they adapt, slowly die out, or thrive in the new ecosystem.
