Evolutionary History

2. a part of an organism (for example, one or more bones)
5. sharing a common ancestor population
6. the process by which the distribution of traits in a population changes over many generations
9. A group of organisms of the same kind (in one or more populations) that do not reproduce with organisms from any other group
10. to classify based on scientific examination
12. the process by which one population evolves into two or more different species
13. a scientist that studies fossils in order to understand the ancient history of life on earth
14. living things, such as plants,animals,and bacteria
15. a related organism from a previous generation
19. when something stays mostly the same over time
20. a specific charactgeristic of an individual organism
21. everything (living & non living) that surrounds an organism
23. evidence of life from the past,such as fossils bones, footprints, or leaf prints
24. an organisms arm,leg,or wing
25. a group of individuals born and living at the same time
26. a graph that uses bars to show how characteristics or values distributed within a group

1. a more recent species that evolved from an ancestor population
3. having died out completely and no longer alive anywhere on earth
4. a body structure in two or more species that features the same parts (for example,the same bones)
7. to receive genes from a parent
8. a group of the same type of organism living in the same area
11. the very long time that spans the history of earth,from the very first cellular life to the present
16. An older population from which two or more species descended
17. the process by which species adapt to environmental changes over a very long time
18. a trait that makes it more likely that an individual will survive in a specific environment
22. a random change to a gene that sometimes results in a new trait