Meaning: Water is important and we should protect it.
Choice of Words: Water is valuable and should be conserved. "Precious" means of great value or worth. "Resource" refers to something that is useful or valuable.
Alternative Expressions
H2O is the stuff of life.
Meaning: This sentence means that water is very important for us to live. We need it to function properly and to survive.
Choice of Words: The chemical formula for water is H2O, which means that it is made up of two hydrogen atoms and one oxygen atom. "Stuff" is a noun that can refer to any material or substance, and "life" is a noun that refers to the state of being alive. So, "H2O is the stuff of life" means that water is essential for life.
Water is the elixir of life.
Meaning: This sentence means that water is very important for us to live. We need it to function properly and to survive.
Choice of Words: An "elixir" is a magical potion that is said to have the power to heal or give life. So, "the elixir of life" is a poetic way to refer to water, which is essential for life.