Organisms and their environment
- Energy flow and food chains
- Sun: principal energy source
- Light energy
- Photosynthesis
- Energy flows, not cycled
- Chemical energy in organisms
- Heat to environment
- Food chain
- Transfer of energy
- Starts with producer
- Arrows: food to feeder
- Food web
- Interconnected food chains
- Consumers
- Primary
- Secondary
- Tertiary
- Quaternary
- Herbivore, carnivore, decomposer
- Eats plants
- Eats animals
- Feeds on dead material
- Human impact Supplement
- Overharvesting
- Introduced species
- Sun: principal energy source
- Nutrient cycles
- Carbon cycle
- Photosynthesis removes CO₂
- Respiration adds CO₂
- Feeding passes carbon on
- Fossil fuels and combustion
- Decomposition
- Bacteria and fungi
- Release CO₂ by respiration
- Carbon cycle
- Populations
- Population
- One species
- Same area
- Same time
- Community
- All populations
- Different species
- Ecosystem
- Community plus environment
- Interacting together
- Population