Question

Which term best describes the process by which cells work together to maintain the needed level of oxygen?

Answer 1

the simpliest answer is....the respiratory system gets oxygen and removes carbon dioxide.
---breathing describes the process of inhaling and exhaling air.the exchange of gases( oxygen and carbon dioxide)between living cells and the environment is a process known as respiration...
hope it helps my answer...

Answer 2

Answer: Homestasis

Step-by-step explanation:

When the cells of a multicellular organism work together to maintain the needed conditions for life.