1. Transfers of energy
1.1. Food chain
1.1.1. Showing who eats who
1.2. Food web
1.2.1. Showing many feeding relationships
2. Factors
2.1. Biotic
2.1.1. Living, was living, was part of something living
2.1.2. Has to be able to reproduce
2.1.3. Trees
2.1.4. Grass
2.1.5. Wood
2.1.6. People
2.1.7. Fish
2.1.8. cats
2.1.9. Dogs
2.2. Aboitic
2.2.1. Not living, never was living, never will be living
2.2.2. Rocks
2.2.3. Dirt
2.2.4. Cloud
2.2.5. Plastic
2.2.6. Metal
2.2.7. Air
2.2.8. Glass
3. Biodiversity
3.1. Primary Succession
3.1.1. first time
3.2. Secondary succession
3.2.1. Rebuilt itself
4. limiting factors
4.1. population growth rate
4.1.1. exponential growth
4.1.1.1. population growth
4.1.1.2. S curve
4.1.1.3. J curve
4.1.2. Population growth
4.2. carrying capasity
5. Water pollution
5.1. Point source
5.1.1. easily identified
5.2. non-point source
5.2.1. hard to identify
5.3. watershed
5.3.1. impermeable
5.3.1.1. cant get through me
5.3.2. Aquifer
6. Levels of organization
6.1. Organism
6.2. Population
6.3. Community
6.4. Ecosystem
6.5. Biome
6.5.1. Freshwater
6.5.2. Marine
6.5.3. Rainforest
6.5.4. Desert
6.5.5. Tundra
6.5.6. Coniferous forrest
6.5.7. Tenperate deciduous forrest
6.5.8. Grassland/savanna
7. Trophic levels
7.1. Producer
7.1.1. Algae
7.2. Primary consumer
7.2.1. Dragon fly
7.3. Secondary consumer
7.3.1. Frog
7.4. Tertiary consumer
7.4.1. Snake