What's Alive (Rise and Shine) (Let's-Read-and-Find-Out Science 1)

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.