1. Level of organization
1.1. Organism
1.1.1. A living thing (hydra, rabbit, cat, and decomposer)
1.2. Population
1.2.1. A group of the same organisms (fish & rabbits)
1.3. Community
1.3.1. A group of different organisms that interact with eachother (deer & squirrel
1.4. Ecosystem
1.4.1. Where all the biotic and abiotic factors are interacting (forest, tide pool tree)
1.5. Biome
1.5.1. Geographic area with many ecosystems based on climate or elevation (Tundra, desert, rainforest, marine,forest, fresh water, savanna, temperature deciduous forest, coniferous forest)
2. New node
3. Biodiversity
3.1. Genetic Biodiversity
3.2. Species Biodiversity
3.3. Ecosystem Biodiversity
3.3.1. abiotic and biotic factors
3.3.1.1. limitting factors
3.4. Hot spots
3.5. indicator species
3.5.1. threatened species
3.5.1.1. endangered species
4. Trophic (energy) level pyrimid
4.1. trophic levels
4.1.1. Producers
4.1.2. 1st degree
4.1.2.1. primary consumers
4.1.3. 2nd degree
4.1.3.1. secondary consumers
4.1.4. 3rd degree
4.1.4.1. tertiary consumers
5. food web
5.1. food chain
6. Ecological Succession
6.1. Primary succession
6.2. secondary succession
7. Succession
7.1. pioneer species
7.2. climax community
8. Population
8.1. Population growth
8.1.1. expotential growth
8.2. population growth rate
8.2.1. carrying capacity