Water plays an important role in supporting plants and animals in the biosphere.
(a) It helps in sustaining various forms of life on earth.
(b) Plants absorb nutrients and moisture (ground water) from soil without which they cannot survive.
(c) The excess water from the plants goes to the atmosphere through the pore spaces in leaves (transpiration), which helps to keep the atmosphere cool.
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(d) Man, plants and animal are predominantly made up of water.
(e) It plays an important role in the biological and biochemical processes such as photosynthesis.
(f) It is an agent or medium for holding and transporting nutrients and carrying away waste products of the body.