Across
- 3. A(n) _____________ species are the first species to come into an area after a disturbance.
- 4. A relationship where both individuals benefit (+/+)
- 6. A change over time.
- 7. The process by which new species are generated.
- 10. A visual map of feeding relationships that shows the many paths of energy flow.
- 11. A relationship where one individual benefits, and the other is unaffected (+/0).
- 13. An animal that eats both plants and animals.
- 14. How reproductively successful an organism is in its environment.
- 15. A long-lasting relationship in which at least one organism benefits.
Down
- 1. A heritable trait that increases an individual's fitness.
- 2. The process by which traits that improve an organism's fitness are passed on more frequently to future generations than those that do not.
- 5. A(n) ___________ species is a nonnative organism that spread widely in a community.
- 8. A tomato plant is a primary ____________ because it makes its own food.
- 9. The process by which two species evolve in response to changes in each other.
- 12. A predictable series of changes over time that occur after a disturbance.