Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
lesson 3
| Term | Definition |
|---|---|
| Biome | a large naturally occurring community of flora and fauna occupying a major habitat, e.g., forest or tundra. |
| climate | the weather conditions prevailing in an area in general or over a long period. |
| desert | The desert biome is an ecosystem that forms due to the low level of rainfall it receives each year. Deserts cover about 20% of the Earth. |
| rain forest | The tropical rainforest biome is an ecosystem that covers about 7% of the Earth's surface. |
| emergent layer | The tallest trees are the emergents, towering as much as 200 feet above the forest floor with trunks that measure up to 16 feet around. |
| canopy | the uppermost trees or branches of the trees in a forest, forming a more or less continuous layer of foliage. |
| understory | a layer of vegetation beneath the main canopy of a forest. |
| grassland | a large open area of country covered with grass, especially one used for grazing. |
| savanna | a grassy plain in tropical and subtropical regions, with few trees. |
| deciduous tree | deciduous is something that sheds after a period of time |
| boreal forest | biome characterized by coniferous forests consisting mostly of pines, spruces and larches. |
| ciniferous tree | mostly evergreen trees and shrubs having usually needle-shaped or scalelike leaves |
| tundra | A cold, treeless, usually lowland area of far northern regions. The lower strata of soil of tundras are permanently frozen |
| permafrost | Permafrost is soil, rock or sediment that is frozen for more than two consecutive years |
Created by:
Katiegirl28!
Popular Science sets