
Plants, animals, humans--all living things need water to survive. But what is this essential substance made of and why is it able to change from a liquid to a solid to a gas and back again? In this book, young students will carry out a series of fun...

Plants, animals, humans--all living things need water to survive. But what is this essential substance made of and why is it able to change from a liquid to a solid to a gas and back again? In this book, young students will carry out a series of fun...