EVOLUTION

3. of Evolution one of the fundamental keystones of modern biological theory.
5. for Existence members of each species have to compete for food, shelter, other life necessities.
6. collected the preserved remains of ancient organisms, called fossils.
7. of the Fittest Some individuals better suited for the environment.
9. change over time.
10. remains of ancient organisms.
11. with Modification Each living organism has descended, with changes from other species over time.
13. Structures have different mature forms in different organisms.
15. Descent were derived from common ancestors.
17. Theory tendency toward Perfection.
19. variation differences among individuals of a species.
20. Record Layer show change Geographic Distribution of Living Things.

1. a science born in the 20th century, reveals in detail how natural selection works.
2. organs serve no useful function in an organism.
4. Wallace wrote an essay summarizing evolutionary change from his field work in Malaysia.
8. selection nature provides the variation among different organisms.
12. Hutton 1795 Theory of Geological change
14. Island smallest, lowest islands were hot, dry, and nearly barren-Hood Island-sparse vegetation.
16. Selection results in changes in inherited characteristics of a population.
18. Lyell Principles of Geography