| A | B |
| marine | (ocean) one of the two regions in the aquatic biome |
| tundra | treeless of Arctic & subartic regions |
| desert | biome that receives less than 25 centimeters of rainfall a year |
| temperate | a climate with a cold season & a warm season of nearly equal lengths |
| grassland | (savanna) made up of mainly grass that receive between 25 & 75 cm. of rainfall yearly |
| polar | a climate with a long cold season & a short warm season |
| coniferous | trees that bare their seeds in cones & do not shed their leaves at one time (spruce, fir, pine, hemlock) |
| tropical | climate is warm year round |
| deciduous | trees that lose their leaves during one season & grow new leaves ( fungi, bacteria, oak trees) |
| climate | average weather pattern from year to year |
| biome | division of area with similar climate, plants |
| desertification | the expansion of a desert area, whether naturally or caused by human activity |
| taiga | (Russian word) area for swamp forest |
| canopy | top layer of forest |
| savanna | grassland |
| phytoplankton | algae & microscopic plants |
| freshwater biome | includes still & running water |
| permafrost | frozen soil in the tundra |