Water is the most abundant.
Uranium hexafluoride is not the most abundant compound found in living things.
The element that is most abundant in living things is carbon. The other five elements that are most abundant in living things are hydrogen, nitrogen, oxygen, phosphorus and sulfur.
In no particular order, carbon, hydrogen, oxygen, nitrogen
water
carbon
Water is the single most abundant compound in living things.
The most abundant compound in human beings is water.water
water
water
DNA
Water makes up about 65% of the human body.
oxygen