1. Organism
Population
Community
Ecosystem
Biome
Biosphere

2. Organism Any living thing But…what is living?
Living things must exhibit at least the first 5 of the following to be considered alive
Composed of cells
Organization
Metabolism
Reproduction
Response to stimuli
Growth

3. Population
All the members of the same species that live in the same place at the same time
What is a species?
A species is a group of organisms that can mate to produce fertile offspring

4. Community
A group of various species that live in the same place and interact with each other
Only biotic factors
Bio-= life
-ic= pertaining to

5. Ecosystem All biotic and abiotic factors interacting in an area
a=without
bio=life
ic=pertaining to
Examples include coral reef, oak forest, large intestine of a cow

6. Biomes
Large region represented by a specific climate and specific plants and animals
Composed of many ecosystems
Includes Tropical rainforest, Tundra, Taiga, Desert, Temperate forest, Grassland
More on these
later…

7. Biosphere
The zone of life on earth