Blood sugar, body water, body temperature, and blood oxygen.
To be alive means to be moving and breathing and if you weren't doing those things then you wold be dead. There aren't any requirements in life you can do whatever you want to do. Nobody's pulling your arm telling you to do one thing and if you don't then something will happen to you. I hope this helps you!!!
Answer:
O Prokaryotes and Autotrophs
Explanation:
this ansser is right
