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In page Hypothetical types of biochemistry:

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Some of the properties of water that are important for life processes include:

  • A high heat capacity (leading to higher environmental temperature stability).
  • Water is a room-temperature liquid leading to a large population of quantum transition states required to overcome reaction barriers. Cryogenic liquids (such as liquid methane) have exponentially lower transition state populations which are needed for life based on chemical reactions. This leads to chemical reaction rates which may be so slow as to preclude the development of any life based on chemical reactions.[citation needed]
  • Spectroscopic transparency allowing solar radiation to penetrate several meters into the liquid (or solid), greatly aiding the evolution of aquatic life.