Across
- 2. a symbiotic relationship in which one organism (the parasite) benefits and the other (the host) is harmed
- 4. organism that eats both plants and animals
- 7. compounds containing the elements carbon, hydrogen, and oxygen
- 11. the transfer of energy from the sun to producers to consumers; describes groups of organisms, each of which is dependent on another food group
- 12. shrimp-like zooplankton
- 13. organisms that eat dead plants and animals, as well as animal waste
- 15. high energy nutrients such as fats and oils
- 17. any organic or inorganic material that an organism needs to metabolize, grow, and reproduce
- 18. naturally occurring, inorganic elements and compounds found in water and soil that do not contain the element carbon
- 19. the process plants use to make the sugar glucose from water, carbon dioxide, and the energy in sunlight
- 21. a permanent, close relationship between two organisms that benefits at least one of them
- 22. an organism that eats animals
- 23. small, usually microscopic animal plankton that float or drift in the ocean
- 24. consumer organisms that eat secondary consumers but may also eat primary consumers and producers
- 27. a chemical reaction where water is used to break down compounds; typically occurs when food is digested
Down
- 1. a symbiotic relationship in which one organism benefits and the other is unaffected
- 3. a symbiotic relationship in which both organisms benefit
- 5. small, usually microscopic plant plankton that float or drift in the ocean
- 6. organism that eats only plants
- 8. a chemical process in which animals break down and utilize nutrients
- 9. organisms that make their own food through photosynthesis
- 10. organisms that eat other organisms
- 14. total amount of organisms per unit volume
- 16. complex organic compound made up of amino acids
- 20. animals that eat the remains of already dead animals and plants
- 21. consumer organisms that eat primary consumers but may also eat producers
- 25. consumer organism that eat plants (producers)
- 26. interrelated food chains in an ecosystem; the feeding relationships between various plants and animals