Energy Transfer

3. Web A complex network of interconnected food chains in an ecological community.
7. Level Each step in a food chain or food web, indicating an organism's feeding position.
8. Organisms that obtain nutrients by consuming dead organic matter.
12. An animal that feeds on plants.
13. Primary Productivity The total rate at which producers capture energy through photosynthesis.
14. Primary Productivity The rate at which producers store energy as biomass, minus their respiration.
15. The total mass of living organisms in a given area or volume.

1. The process where green plants use sunlight, water, and CO2 to create food.
2. Non-living organic matter, such as dead leaves and animal waste.
4. Chain A linear sequence of organisms showing how energy is transferred from one to another.
5. Transfer The movement of energy from one organism to another in an ecosystem.
6. Organisms that create their own food, usually through photosynthesis.
9. Resource Able to be replenished naturally within a human timescale.
10. An animal that eats both plants and animals.
11. Organisms that obtain energy by feeding on other organisms.