| A | B |
|---|
| biome | A group of ecosystems with similar climates and organisms |
| canopy | A leafy roof formed by tall trees. |
| savanna | A grassland close to the equator. |
| tundra | An extremely cold, dry biome. |
| desert | An area in which the yearly amount of evaporation is greater than the amount of precipitation. |
| grassland | An area populated by grasses that gets 25 to 75 centimeters of rain each year. |
| neritic zone | The region of shallow ocean water over the continental shelf |
| permafrost | Soil that is frozen all year. |
| understory | A layer of shorter plants that grow in the shade of a forest canopy |
| intertidal zone | The area between the highest high-tide line and the lowest low-tide line. |
| deciduous trees | Trees that shed their leaves and grow new ones each year. |
| estuary | A habitat in which the fresh water of a river meets the salt water of the ocean. |
| coniferous trees | Trees that produce their seeds in cones and have needle-shaped leaves. |
