1. Unit 2: Ecological organization

2. Organism
The simplest denomination of life within a system
Example:

3. Population
A group of organisms within a certain area that belong to the species
Example:

4. community
Consists of all organisms, all the populations of different species, that in habit an area, these are called biotic factors
Example: Interacting populations of hunting dogs and wildebeest
Note: not just animals, but plants as well

5. ecosystems
The non-living, including temperature, energy, and water, and living things within an area, these are called abiotic factors
Example:

6. biome
Several communities found around the world with the same characteristics, including major life forms
Geography and climate (temperature and precipitation) determine the biome
Tundra, Boreal Forest, Temperate Forest, Tropical Rain Forest, Grassland, Desert (Terrestrial Biomes)

7. Biome
Example: Grassland

8. biosphere The world (Earth)
Composed of many ecosystems where organisms interact with their environment

9. Another example
__________________: Lemming

10. Example continued Population _______________
Lemming populations fluctuate greatly from year to year, and even migrate as a group
_______________
Many other artic species are dependent on lemming populations

11. Example continued _________________: Artic Tundra Biome: _________
Biosphere: Earth