Across
- 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
Down
- 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