EVOLUTION

1. smallest island, lowest islands were hot, dry, and nearly barren-Hood Island-sparse vegetation.
3. organs that serve no useful function in an organism.
4. change over time.
5. collected the preserved remains of ancient organisms, called fossils.
6. wrote an essay summarizing evolutionary change from his field work in Malaysia.
8. structures that have different mature forms in different organisms.
11. remains of ancient organisms.
13. were derived from common ancestors.
14. Principles of Geography
16. selection of results in changes in inherited characteristics of a population.
18. variation of differences among individuals of a species.
20. struggle for members of each species have to compete for food, shelter, other life necessities.

2. selection of nature provides the variation among different organisms.
7. one of the fundamental keystones of modern biological theory.
9. descent of each living organism has descended, with changes from other species over time.
10. layer show change Geographic Distribution of Living Things.
12. 1795 Theory of Geological change
15. theory of tendency toward Perfection.
17. survival of some individuals better suited for the environment.
19. a science born in the 20th century, reveals in detail how natural selection works.