| A | B |
|---|
| Biomes | Large geographical areas that have similar climates and ecosystems |
| Tundra | Cold, dry, treeless region |
| Taiga | Cold, forest region dominated by cone bearing evergreen trees |
| Temperate deciduous forests | Region dominated by deciduous trees |
| Temperature rain forests | Region with an average temperature range of 9 to 12 degrees Celcius and precipitation of 200 to 400 cm per year |
| Tropical rain forest | Warm temperatures, wet weather, and lush plant growth are found here |
| Desert | The driest biome of all |
| Grasslands | Temperate and tropical regions that receive between 25 cm and 75 cm of precipitation each year |
| Wetlands | Regions that are wet for all or most of a year |
| Coral reefs | One of the most diverse ecosystems in the world |
| Intertidal zones | The portion of the shoreline that is covered with water at high tide and exposed to air during low tide |
| Estuary | The area where a river meets an ocean and saltwater and fresh water mix |
| Succession | The normal gradual changes that occur in the types of species that live in an area |
| Pioneer species | The first organism to inhabit an area |
| Climax community | A community of plant that is relatively style and undisturbed |
