Evolutionary History

2. the process by which species adapt to environmental changes over a very long time
4. a group of the same type of organism living in the same area
5. evidence of life from the past, such as fossilized bones, footprints, or leaf prints
7. having died out completely and no longer alive anywhere on Earth
9. a related organism from a previous generation
14. the process by which one population evolves into tow or more different species
15. a trait that makes it more likely that an individual will survive in a specific environment
16. a random change to a gene that sometimes results in a a new trait
17. everything (living and nonliving) that surrounds an organism
18. a group of individuals born and living at about the same time
21. a group of organisms of the same kind that do not reproduce with organism from any other group

1. a part of an organism (for example, one or more bones)
3. when something stays mostly the same over time
6. living things, such as plants, animals, and bacteria
8. to receive genes from a parent
10. a graph that uses bars to show how characteristics or values are distributed within a group
11. to classify based on scientific examination
12. a scientist who studies fossils in order to understand the ancient history of life on Earth
13. a specific characteristic of an individual organism
19. sharing a common ancestor population
20. an organism's arm, leg, or wing