| A | B |
| oxygen | a gas that plant give off into the air |
| vertebrate | any animal with a backbone |
| invertebrate | any animal without a backbone |
| mammal | vertebrates that have hair or fur |
| bird | vertebrates that have feathers |
| fish | vertebrates that take in oxygen through gills and spend their whole life in water |
| reptile | vertebrates with dry, scaly skin |
| amphibian | vertebrates that have moist skin and legs as adults |
| 4 things animals need to live | oxygen, water, food, and shelter |
| examples of vertebrates | monkeys, toucans, fish, lions |
| examples of invertebrates | jellyfish, fireflies, spiders, horseshoe crabs |
| examples of reptiles | alligators, iguanas, sea turtles |
| examples of amphibians | frogs, salamanders |