| A | B |
|---|
| environment | everything that surrounds a living thing |
| climate | the weather in a place year after year |
| ecosystem | all the living and non-living things that interact with each other in a given area |
| habitat | the place where a living thing makes its home |
| population | all the living things of the same kind that live in the same place at the same time |
| community | all the populations that live together in the same place |
| forest | a large area covered with trees and undergrowth |
| wetland | low land ecosystem that is covered by water at least part of the time during the year |
| freshwater | lakes, ponds, rivers, and streams |
| saltwater | body of water that contains salt |
| grassland | ecosystem that has many grasses and few trees |
| desert | ecosystem that gets less than 25 centimeters of rainfall a year |
| tundra | ecosystem that is cold and dry |
| coniferous forest | ecosystem that has many coniferous trees |
| deciduous forest | ecosystem that has many deciduous trees |
| tropical forest | forest that is very damp and rainy all year |
| ocean | water ecosystem that has salt in the water |
| permafrost | the frozen layer of soil in the tundra |
