SB5a, SB5b, SB1c

2. plant-like microorganisms that are the primary producers of the aquatic community
8. a living creature that eats organisms from a different population
9. Level each step in a food chain
10. living organisms and nonliving factors of a specific area
11. Factor the living components (organisms) that shape up the environment
12. Producer organisms, such as plants and phytoplankton, that can produce their own food through photosynthesis or chemosynthesis
17. a type of heterotrophic plankton that range from microscopic organisms to large species, such as jellyfish.
21. members of the same species living in the same area
23. occurs when anaerobic bacteria (chemoautotrophs) break down nitrates and release nitrogen gas back into the environment
24. organisms that feed on herbivores or other consumers
26. the amount of dried organic material in an organism
27. Organisms that cannot make their own food; have to ingest food in order to get energy; also called consumer
29. the process of creating sugars (food) using energy released from chemical reactions
31. Pyramid illustrates the flow of energy, biomass, or numbers at each trophic level in an environment
32. organisms that eat both plants and animals

1. organisms that get their energy from breaking down decaying organisms without consuming them
3. organisms that feed on producers
4. the portion of the Earth (air, water, and land) where living things exist
5. chemical substances found in every living thing on Earth
6. the study of interactions between organisms and the nonliving components of their environment
7. Nutrient the nutrient which is present in the least quantity in an ecosystem
13. an organism that can produce its own food using light, water, carbon dioxide, or other chemical
14. the process of converting light, water, and carbon dioxide into sugar and oxygen
15. a diverse group of organisms that interact in a common location
16. Chain one possible feeding relationship in an environment; arrows move in direction of energy flow
18. animals that consume dead organisms that have died from causes other than predation or have been killed by other predators
19. an organism that survives on a diet of dead and decaying plant and animal matter
20. Cycle the movement of nutrients and other elements between biotic and abiotic factors
22. Factor a non-living part of an ecosystem that shapes its environment
25. Fixation converting nitrogen gas into ammonia by specific bacteria or lightning strikes; ammonia gets into the environment, which is a form organisms can use
28. an area of land with similar plants, animals, and climate
30. Web all possible feeding relationships in an environment