Ch 15 & 17

2. The smallest grouping which contains only a single kind of organism.
5. Two or more species have evolved adaptations to each other's influence
6. Each phylum consist of this
7. Trait that makes an individual successful
8. Group within a taxonomic system
9. The variety of organisms considered at all levels from populations to ecosystems.
13. group of organisms that includes an ancestor plus all of its descendants
14. The study of the locations of organisms around the world.
16. Measure of an individual's hereditary contribution to the next generation
18. Science of describing, naming and classifying organisms
19. Subsets below the kingdom level

1. Largest category of Linnaeus hierarchy of organization
3. More offspring can be produced than can survive to maturity
4. Categories above the kingdom level.
10. Each class contains this
11. Biologists refer to variations of a species that live in different geographic areas
12. The relationships of ancestry among groups of organisms.
15. Development of new types of organism from preexisting ones
16. Is the remains or traces of an organism that died long ago
17. Rock layers