| Term | Definition |
| species | an animal family |
| particular | special |
| biologist | a person who studies plants and animals |
| laboratory | a place where scientists study and experiments are done |
| observation | the act of studying or noticing |
| pollution | harmful material added to the air, water, or soil |
| skyscraper | a very tall building found in the city |
| habitat | the natural surroundings of a plant or animal |
| exhaust | the gases from a car that go into the air |
| migrating | to move from colder to warmer lands and back again |
| sewer | an underground pipe that carries dirty water from buildings |
| urban | in the city |