Across
- 2. the science of naming and classifying organisms
- 3. An orchid attaches to a high tree branch to receive more sunlight; the tree is not affected by the orchid.this is an example of
- 7. The formation of a new species as a result of evolution
- 12. A Characteristic that improves an individual’s ability to survive and reproduce in particular environment
- 13. species living in similar environments evolve and have offspring with similar traits
- 15. the process by which organisms that are most suited to their environment survive and reproduce most successfully
- 17. a method of classifying organisms using shared derived characteristics
- 18. the study of living things and their environments
- 20. The variety of life in an area
- 21. remnant of a past life
Down
- 1. all populations that live in a certain place
- 3. The number of organisms of one species that an environment can support
- 4. A close association between two or more organisms of different species
- 5. Organism in a food chain that represents a feeding step in the passage of energy
- 6. differences in physical traits of an individual from the group to which it belongs
- 8. conditions in the environment that put limits on where an organism can live
- 9. a structure that is reduced in size and has little or no function
- 10. An organism that lives off of dead or decaying organic material by secreting enzymes into it and then absorbing its nutrients
- 11. organism's role, or job, in its habitat
- 14. materials through an ecosystem
- 16. the process by which two species evolve in responsible to changes in each other over time
- 19. changes in allele frequencies over time