Which of these properties of water is not important to life

Which of these properties of water is not important to life on Earth?

A. Water\'s ozone production and therefore ultraviolet light filtration

B. Water\'s transparency and therefore light Penetration

C. Water\'s density and therefore physical support.

D. Water\'s high latent heat and therefore global temperature regulation

Solution

A. Water\'s ozone production and therefore ultraviolet light filtration.

Compared with other materials water needs a relatively large amount of heat energy in order to evaporate (i.e. change state from liquid to gas). This is called the \"latent heat of evaporation\" and the value for water is approx. 2270 kJ/kg at 1 atm pressure.
Therefore the evaporation of sweat from the surface of the skin is very efficient in helping to cool the body because it removes relatively large amounts of heat from the body as the sweat evaporates.

Light can also penetrate through water and this property of water enables living organisms that inhabitat aquatic ecosystems to carry out photosynthesis.

On the other hand water as not regarded as the reliable substance for UV light filtration.