| Term | Definition |
|---|---|
| organism | a living thing |
| environment | all the living and nonliving things that surround an organism |
| cell | the basic building block that makes up all living things |
| root | a plant structure that takes in water and nutrients and holds a plant in place |
| stem | a plant structure that holds a plant up and helps leaves reach sunlight |
| leaf | the plant structure where a plant makes food |
| photosynthesis | the process through which plants make food |
| shelter | a place in which an animal can stay safe |
| vertebrate | an animal with a backbone |
| invertebrate | an animal that does not have a backbone |
| reptile | a vertebrate that has scaly, waterproof skin, breathes air with lungs, and lays eggs |
| amphibian | a vertebrate that spends part of its life in water and part of its life on land |
| mammal | a vertebrate that has hair or fur, is born live, and feeds its young with milk |
