Living things find what they need in their environments. As they live in a place, they change it. Use clues to tell who has been in each place--the cat, the dog, or Sam. Fully decodable text features high-frequency words, and words with the short a, m, s, and t sounds. Also features tips for teachers and caregivers along with additional information at the end to build the reader's background knowledge of the topic. Downloadable Teacher Notes available.