Drip, drip, drop: Earth's water

"In this book, readers will learn about the Earth's water."--

"In this book, young readers will learn all about groundwater."--

"In this book, young readers will learn about fresh water, and how it differs from salt water."-- The Earth is three-quarters water but most of it is salty, and we need fresh water to survive. Lawrence explains how the two differ, where fresh water comes from, and ways we can conserve it.