| A | B |
| This tropic level has autotrophs | First level |
| Percent of total energy from an herbivore stored by the consumer that eats it | 10% |
| Majority of energy in a food chain is | Used by organisms or released as heat |
| Plants get energy from | Sun |
| Reason for many producers and few carnivores | A large loss of energy |
| Top of energy pyramid | Carnivore |
| Diagram showing how energy decreases from lower to higher trophic levels | Energy pyramid |
| Process in which plants and animals break down glucose to release energy | Cellular respiration |
| An herbivore gets its energy from | Plants |
| Organism that produces its own food | Autotroph |
| The top trophic level contains | Carnivores |
| Feeding position in a food chain | Trophic level |
| Heterotrophs are in these levels of the energy pyramid | All except the first |
| Number of levels in an Energy Pyramid | Usually no more than 4 |
| Amount of energy a plant produces that is passed to a consumer | Very little |
| % of the original energy of a producer available to organism on third trophic level | 1% |
| Ability to do work | Energy |
| Largest tropic level | First level |
| Organisms on first trophic level | Producers |
| This happens to some energy as it moves from one trophic level to the next | It is lost |