Natural Selection (AKS 4)

3. - a condition that causes harm to the health of a person, animal, or plant; illness; sickness
5. - the diversity of life forms on earth or part of the earth, including diversity of species, genes, and ecosystems, esp. when regarded as providing the optimal conditions for evolution
7. Selection - a natural process of evolution in which the organisms that are best adapted to their environment survive and are able to reproduce, while those that are weak leave fewer or no offspring
8. - the process or act of trying to win
10. - the child or young of a particular human, animal, or plant
12. of the Fittest - in biology, the evolutionary principle that only the forms of plants or animals best suited to or most easily able to adapt to existing conditions will survive, while other less suited forms will become extinct
13. - an animal that hunts other animals for food
15. - a variety
16. - a group of living things that can mate with one another but not with those of other groups
18. - money or things that are available for a particular use
19. - everything that surrounds a particular type of living thing and affects its growth and health
20. - in biology, a change in an organism, over time, that better enables it to survive and multiply

1. Darwin - Father of evolution; studied finches on Galapagos Islands
2. - the degree to which something varies; amount of change or difference
4. - the theory that describes how all life forms developed from simpler life forms by changes that took millions of years
6. - a way of hiding something by covering or coloring it so that it looks like its surrounding
9. - a sudden, apparently abnormal change or alteration in a genetically determined structure, as opposed to gradual evolutionary change
11. - to have young or offspring
14. - to fill with more inhabitants than available resources can sustain
17. - an animal being hunted, caught, and eaten by another animal