From Our Editors
How to tell the difference between living and nonliving things--an essential first skill in scientific sorting and classifying--is explored with hands-on activities and colorful diagrams.
From the Publisher
Are you like a cat?You don't look like a cat. But you and a cat have something in common: You are both alive. People and plants and animals are all alive, but is a doll alive? Or your tricycle? How can you tell? Read and find out what makes something alive, and what all living things need to stay healthy.