Vocab part B

2. Species living in different habitats don't reproduce together.
5. Similar body parts in different species that evolved for the same purpose, but don't share a common ancestry.
6. selection Humans choose specific traits in plants and animals.
8. How well an organism survives and reproduces in its environment.
12. The process by which new species form.
13. drift Random changes in traits can occur, especially in small populations.
14. selection Organisms with helpful traits survive and reproduce more.
16. Populations accumulate genetic differences over time.
18. Species separated by physical barriers may evolve into new species.
19. Different mating behaviors prevent species from interbreeding.
20. Similar body parts in different species due to common ancestry.
21. When a species completely disappears because it can't adapt.

1. Body parts that no longer serve their original function.
3. of the fittest. The best-adapted organisms are more likely to survive and reproduce.
4. Physical differences prevent species from mating.
7. Preserved remains or traces of ancient organisms.
9. Species that reproduce at different times can't mate.
10. Changes in DNA can lead to new traits.
11. Traits are passed down through DNA.
15. A helpful trait that improves survival and reproduction.
17. Species change over time through genetic differences and natural selection.