Evolution

1. the rise of two or more species form one existing species
3. a group of organisms that can reproduce and have fertile offspring
5. the study of fossils or extinct organisms
6. evolution within a population
10. a mechanism by which individuals that have inherited beneficial adaptations produce more offspring on average than do other individuals
16. forms new combinations of alleles
18. the measure of survival ability and ability to produce more offspring
20. changes in landforms result from slow changes over a long period of time

2. too many born to survive
4. the biological change process by which descendants come to differ from their ancestors
7. a random change in the DNA of a gene
8. a difference in a physical trait
9. geological processes that shape the earth uniform through time
11. a feature that allows an organism to better survive in its environment
12. the elimination of a species
13. natural disasters shaped earth's landforms and cause extinction
14. the ability of a trait to be passed down
15. the crossing of two different species
17. evolutionary paths become connected
19. study of structures and functions in the body