| A | B |
|---|
| The study of organisms and their interactions with the environment | Ecology |
| The thin layer of air,land, and water that is home to all living things | Biosphere |
| A living part of an environment, such as a plant, animal, or other organism | Biotic Factors |
| A nonliving part of an environment, such as water, soil, light, temperature, and wind | Abiotic Factora |
| A group of organisms of the same species living in a specific area | Population |
| A collection of interacting populations within a given ecosystem | Community |
| The type of environment in which a particular species lives | Habitat |
| The combination of all the communities and abiotic factors in an environment | Ecosystem |
| The average weather pattern of an area over time | Climate |
| The region that extends from the equator to about 30 degrees north and south latitudes | Tropical Zone |
| The region that extends from about 30 degrees to about 60 degrees north and south latitudes | Temperate Zone |
| The region beyond 60 degrees north or south latitude | Arctic Zone |
| A region of low rainfall on the sheltered side of a mountain | Rain Shadow |
| The height above sea level | Altitude |
| A large group of similar ecosytems containing distinctive types of plants and other organisms; determined by climate | Biome |
| A region such as qa bog, swamp, or marsh that is permanently or occasionally covered with water | Wetlands |
| An area where fresh and salt water mix | Estuary |
