| A | B |
|---|
| Biome | large region characterized as having a distinct climate and specific types of plant and animal life |
| Tundra | cold,dry,mostly treeless and land biome; the land is mostly covered by permafrost |
| Coniferous Forest | forests with trees that remain green yearlong and have needle-like leaves and produce seeds in cones; usually found just south of the tundra |
| Decidous Forest | forests with trees that drop all their leaves each year; located in temperate climates with lots of rain,moderate temperatures, and a long growing season |
| Tropical Rain Forest | forests near the equator with warm temperatures and abundant rainfall; they are home to more species than any other ecosystem |
| Grasslands (Savanna) | biomes in which the main type of plants are grasses; mild summers and cold winters with moderate rainfall; too dry for trees but very fertile so lots of grasses can grow |
| Desert | dry,hot enviroments with very little rainfall; it is very cold at night; water is the limiting resource |
| Freshwater Ecosystem | lakes,ponds,swamps,streams,rivers,and estuaries that all have a water with lottle or no salt |
| Saltwater Ecosystem | aquatic ecosystems with salty water; split into open-ocean zone,intertidal zone,and coral reefs |
