| A | B |
| biome | a large region of land with a specific climate and specific plant and animal life |
| desert | dry climate that receives less than 25 cm. of rain a year |
| grassland | large land region in which main types of plants are grasses |
| permafrost | layer of earth in the tundra biome that is frozen to about 1 meter below ground level, all year |
| taiga | a conifer (pine) forest biome south of the tundra |
| temperate deciduous forest | a biome made of wooded areas with trees that drop leaves; 4 specific seasons |
| tropical rainforest | a biome which is thick with plants and has lots of different animals and plants; humid and warm |
| tundra | a cold, dry, mostly treeless biome at high altitudes and latitudes |