This unit includes five lessons that build student understanding on why certain organisms survive better than others in a specific habitat. The lessons include: 1) Lesson 1-Biomes (students learn what biomes are by gathering information and creating a biomes chart after watching a video and viewing a PowerPoint. They make predictions about what animals they think might live in each biome and why they think that), 2) Lesson 2-Adaptations (students discuss different animals in the area where they live and why they think the animals are adapted to survive there. Then students become experts on specific biomes in small groups, fill out a graphic organizer, and write a short informational piece about their biome to share with others), 3) Lesson 3-Biomes Experts (students share their expert informational pieces with the class), 4) Lesson 4-An Animal That Can Survive in All Biomes (students use the information they have learned to create an animal with at least 2 adaptations to help it survive in all the biomes. Student share and explain their drawings to others. Then they fill out an animal adaptation chart for their created animal -self assessment - and can revise their animal drawings if needed), and 5) Lesson 5-Adaptations and Environmental Changes (students share their work and drawings from the lessons so far with each other to review what they learned prior to completing an open-ended adaptation quiz).