Describe the usefulness of water in the biosphere and biological systems.

(N/A) Water is essential for all forms of life. It constitutes around $65 \%$ of the human body and $95 \%$ of plants. Water plays an important role in the biosphere owing to its high specific heat,thermal conductivity,surface tension,dipole moment,and dielectric constant. The high heat of vaporization and heat capacity of water help in moderating the climate and body temperature of all living beings. It acts as a carrier of various nutrients required by plants and animals for various metabolic reactions.