Why is water such an important molecule to living things?
The important thing about this is that water is neutral.
the water is a present and has living molecules.
Water is a natural solvent. The specific arrangement of the hydrogen and oxygen atoms allow a water molecule to be polarized. One side holds a net negative charge while the other side holds a net positive charge. This arrangement allows water to dissolve biodegradable things. When something is dissolved into water, it is dispersed into the volume of water through diffusion. Since water can do this, it becomes fundamental to the feeding/waste cycle of all living things on Earth.