Evolution

3. A form of speciation in which the evolution of a new species from a surviving ancestral species while both continue to inhabit the same geographic region.
6. A change or the process of change by which an organism or species becomes better suited to its environment.
7. Layered sedimentary formations that are created mainly by photosynthetic microorganisms such as cyanobacteria, sulfate-reducing bacteria and proteobacteria
10. The seasonal movement of a species from one region to another.
11. The history of the evolution of a species or group.

1. A condition in which the cells of an organism have more than one pair of chromosomes, as opposed to being diploid or haploid normally.
2. A sharp reduction in the size of a population due to environmental events such as famines, earthquakes, floods, fires, disease, and droughts
4. When the DNA of a gene is damaged or changed in such a way as to alter the genetic message carried by that gene.
5. Pioneered the idea of evolution based off of natural selection.
8. The dying out or termination of a species
9. A mode of speciation that occurs when biological populations become geographically isolated.
12. The theory that evolutionary changes occur very slowly over long periods of time, as opposed to big sudden steps.