Across
- 2. change over time.
- 5. Principles of Geography
- 7. wrote an essay summarizing evolutionary change from his field work in Malaysia.
- 9. members of each species have to compete for food, shelter, other life necessities.
- 11. have different mature forms in different organisms.
- 12. Some individuals better suited for the environment.
- 14. nature provides the variation among different organisms.
- 17. one of the fundamental keystones of modern biological theory.
- 18. results in changes in inherited characteristics of a population.
- 19. 1795 Theory of Geological change
- 20. a science born in the 20th century, reveals in detail how natural selection works.
Down
- 1. serve no useful function in an organism.
- 3. smallest, lowest islands were hot, dry, and nearly barren-Hood Island-sparse vegetation.
- 4. collected the preserved remains of ancient organisms, called fossils.
- 6. tendency toward Perfection.
- 8. Each living organism has descended, with changes from other species over time.
- 10. differences among individuals of a species.
- 13. show change Geographic Distribution of Living Things.
- 15. were derived from common ancestors.
- 16. remains of ancient organisms.