ANSWERS: 4
  • We are about 70% made up of water. Water-based fluids carry all the chemicals round our bodies, and all the chemical reactions that make our bodies work happen in a watery environment. At one level, we simply are bags of impure water. Without it, we die - and yet we continuously lose it through breath, sweat, and urine. We have to make it up or the machinery stops working.
  • It makes an excellent electrolyte by dissolving salts. It can be used to carry waste products like urea and salt. It has a large heat capacity, and doesn't evaporate as readily as other covalent substances like ethanol or ammonia. It's excellent as cooling substance, and for maintaining heat balance. It readily acts as both an acid or base depending on the situation, and can maintain pH stability by the dissolving of buffers. It's liquid at room temperature, so allows the flow of resources around the body. The brain and other vital organs use water (along with othre proteins and whatnot) as a buffer for hard knocks. Its also very wet.
  • Water dissolves almost everything.
  • water is considered a universal solvent.

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