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Re: Water
The essense of the living state is hydrogen bonding. Without hydrogen bonding the DNA double helix and all the template relationships would not form. Water is a hydrogen bonding solvent and medium for cellular hydrogen bonding. Ammonia could almost do the same thing because it also forms hydrogen bonds, NH3. The problem is that ammonia becomes a liquid at -33C. Reaction kinetics would stall. The answer is, water is needed.
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