Ecology Crossword (M.P.1)

4. the path of energy through the trophic levels of an ecosystem
6. regular progression of species replacement
7. succession that occurs in areas where there has been previous growth (ex: forest fires, forest clearings)
8. the many different species that live together in a habitat
11. a symbiotic relationship in which both species benefit (ants and aphids)
15. place where a particular population of a species lives
17. the specific set of environmental conditions required by an organism
18. Organisms that make their own food, producers
19. succession that occurs where plants have not grown before (ex: volcanoes, receding glaciers)
20. the first organisms to live in a new habitat; usually small, fast growing plants
22. two or more species live together in a close, long-term association

1. the physical, or non-living aspects of a habitat
2. both herbivores and carnivores
3. a community and all of the physical aspects of its habitat (soil, air, water, weather)
5. Organisms that consume producers for food, consumers
8. one species benefits and the other is neither harmed nor helped
9. one organism feeds on and usually lives on or in another, does not usually kill the host (ticks)
10. number of species living within an ecosystem
12. third trophic level, animals that eat herbivores
13. the living organisms of a habitat
14. second trophic level, animals that eat plants or other primary producer
16. a complicated, interconnected group of food chains
21. Study of interactions of living organisms with one another and with their physical environment