<unk>  is the part of human homeostasis concerning the proper balance between<unk> s and<unk> s, in other words the pH. The body is very sensitive to its pH level. Outside the range of pH that is compatible with life, proteins are denatured and digested, enzymes lose their ability to function, and the body is unable to sustain itself.
Acid-base homeostasis
Heat transfer
Oxygenation
Thermoregulation
Mucociliary clearance
Phosphate homeostasis
Photosynthesis
Cellular respiration