"Water. It is crucial for life on Earth, and it is everywhere. It is also the only substance on Earth that naturally has three forms : it can be a liquid, a solid, or a gas. Why is water so important for life?"-- Provided by publisher.

"Noun, an odorless, tasteless liquid that falls from the clouds as precipitation to form streams, lakes, rivers, and seas; covers 70% of Earth; freezes at 32 degrees F and boils at 212 degrees F; is a major part of all living things"--Title page.