Evolution

2. a barrier preventing two organisms from producing fertile offspring
5. a period of time where a group of organisms diversifies into many niches in their community
9. the differences between members of the same species
10. change in an organisms's DNA
12. a genetic drift effect the occurs when the population size is reduced by natural or human disasters
13. an event 65 million years ago where an asteroid hit the Earth and destroyed the dinosaurs
14. having the same traits or characteristics

1. an event where most of the species on Earth go extinct
3. a process where individuals who have more favorable traits tend to survive and reproduce more than others in the population due to those traits
4. a barrier preventing two organisms from mating
6. a process where two communities of the same organized become separated geographically
7. an event 252 million years ago where 90 to 96 percent of all species went extinct, aka "The Great Dying"
8. when one species splits into multiple
11. a remnant of an organism