Complete the passage.

the human body works well when the cells of the body work well. the cells in the body work well when the conditions are just “right.” these “right” conditions are maintained by the body through
, the state of maintaining a stable internal environment despite changing external conditions.

, amount of sugar, and amount of water are some conditions that need to be right in the body for cells to work properly. when all the conditions are just right, the cells function properly