Across
- 1. common pioneer species made up of alga and fungus
- 3. symbiotic relationship in which one individual is harmed but the other is benefitted
- 8. movement of individuals out of a population
- 10. density independent factors can reduce population size but is completely _______.
- 11. a jaguar's time of activity is ______.
- 14. close, long-term relationship shared among species
- 17. The largest of nature’s “houses” is the
- 18. the role that an organism plays within its ecosystem
- 19. organisms that obtain their energy from dead matter or waste
- 21. all of the pine trees in the forest make up a ________.
- 23. the way individuals are arranged in space
- 24. Back and forth evolutionary adjustments between species
- 25. groups of populations make up __________.
- 26. This law tells us every organism relies on other organisms to survive.
- 27. relationship in which both participating individuals benefit
- 28. A regular progression of species of replacement over time
- 29. The prefix "ECO" stemmed from the greek term _______
- 30. is the scientific study of interactions among organisms with each other and with the environment.
Down
- 2. combination of the communities and the physical (nonliving) environment.
- 4. In food webs the arrows point in the direction of energy _____.
- 5. the rate at which producers make energy (from sunlight).
- 6. ecological interaction in which one animal kills another animal for food.
- 7. eats both plants + animals
- 9. species that are brought to a new habitat by human means
- 12. Invasive species are considered problematic if they have no
- 13. How much energy is passed on to each trophic level?
- 15. a group of individuals similar to one another that can breed and create fertile offspring.
- 16. the population size that an environment can sustain
- 20. one individual benefits; the other is neither helped nor harmed.
- 22. a large group of many ecosystems