article_snippet.sent: Water is important because life, as We know it, needs it to survive.
article_snippet.sent: The chemical elements in water, hydrogen and oxygen, are some of the most abundant elements in the universe.
article_snippet.sent: These are liquid water, essential chemical elements for biological processes and sources of energy that could be used by living things.
highlights_snippet.sent: Water is important for the search for life - as life as we know it needs it .