| __ | 1. | Carnivore | | A. | all the living and nonliving things and their interactions |
| __ | 2. | Consumer | | B. | using sun energy to make their own food (plants) |
| __ | 3. | Decomposer | | C. | waves of heat energy from the sun to the earth |
| __ | 4. | ecosystem | | D. | cannot produce their own food; have to eat |
| __ | 5. | Food chain | | E. | consumers that only eat other animals |
| __ | 6. | Food web | | F. | consumers that only eat plants |
| __ | 7. | Herbivore | | G. | plants and animals in several food chains link together |
| __ | 8. | Omnivore | | H. | consumers that eat both plants and animals |
| __ | 9. | Producer | | I. | model showing how living things are connected |
| __ | 10. | Radiation | | J. | cause dead plants and animals to decay |
| __ | 11. | Biodegradable | | A. | everything around a living organism |
| __ | 12. | Deforestation | | B. | no more of these organisms are alive on earth |
| __ | 13. | Drought | | C. | needs in order to survive; food, water, sunlight, air, soil |
| __ | 14. | Environment | | D. | little rainfall causing dry soil |
| __ | 15. | Extinct | | E. | physical space where an organism lives |
| __ | 16. | Fossil | | F. | addition of unwanted substance in the environment |
| __ | 17. | Habitat | | G. | the clearing of forest land |
| __ | 18. | Pollution | | H. | material that can be broken down in nature (nutrients) |
| __ | 19. | Resource | | I. | remains or trace of a plant or animal from the past |
| __ | 20. | Trace fossil | | J. | evidence of an animal’s activity (ex: footprints) |