Why is water essential for life?

Water is defined as an inorganic, transparent, tasteless, odourless, and colourless chemical substance. It is the main constituent of the earth’s hydrosphere. Water is considered to be an essential part of life because of the following reasons:

  • Water is essential to life because all life forms are dependent on it.
  • Life began in the presence of water.
  • Water is the medium of life.
  • It is the most abundant compound found in all organisms. It varies from 65 to 89 % in different organisms.
  • Human tissues contain about 20 % water in bone cells and 85% in brain cells.
  • Almost all the reactions of a cell occur in the presence of water.

Chemical properties water

The following are the chemical properties of water:

  • Water is amphoteric in nature that is it can behave as both acid and base.
  • Water is a great source of hydrogen and when electropositive elements react, they reduce water to hydrogen molecules.

Related Questions:

What are the properties of water?

Water as a Resource

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