Ecosystems Ch.4

3. plants that use sunlight, CO2, and H2O to make food
5. to use again
6. to recover a resource from an item and use to make a new item
7. all organisms in an ecosystem that eat to get energy
9. all the conditions surrounding an organism; environments may be hot or cold, and on land or in water
13. a populations role in habitat
16. secondary or 2nd level consumers are __________(meat eaters)
18. depend on each other for survival
20. a diagram that combines many food chains into one picture
21. an attempt to preserve and protect an environment from harmful changes
23. individuals of the same kind in the same environment
24. cut down on the use of resources
26. a place where an organism lives
27. eat both meat and plants and may be 1st level

1. an organism that lives on or inside another organism
2. a place for trash, dug into ground and lined with protective layer of clay or plastic to protect from toxic run-off
4. available supplies of food, water, sunlight, and space in an environment
8. a long-term relationship between different kinds of organisms
10. any substance that damages the environment
11. a type of “contest” among organisms for resources
12. community and its physical environment
14. organisms that are hunted by other organisms
15. organisms that hunt and consume other organisms
17. single organism in an environment
19. primary or 1st level consumers are __________(plant eaters)
21. all populations living together in an environment
22. any factor that limits the ability of a population to live, survive, or thrive in an environment
25. consumers that break down tissues of dead organisms