1. EVOLUTION

2. ANY TRAIT THAT HELPS AN ORGANISM SURVIVE AND REPRODUCE UNDER A GIVEN SET OF ENVIRONMENTAL CONDITIONS

3. ADAPTIVE VALUE

4. THE PROCESS BY WHICH SPECIES CHANGE OVER TIME

5. EVOLUTION

6. THE DISAPPEARANCE OF ALL MEMBERS OF A SPECIES FROM EARTH

7. EXTINCTION

8. A COLLECTION OF FOSSILS USED TO REPRESENT EARTH’S HISTORY

9. FOSSIL RECORD

10. THE NORMAL DIFFERENCES FOUND AMONG OFFSPRING

11. GENETIC VARIATION

12. EARTH’S HISTORY AS REVEALED BY LAYERS OF ROCK

13. GEOLOGIC TIME

14. ANY ALTERATION IN THE SEQUENCE OF DNA

15. MUTATION

16. THE PROCESS BY WHICH THE ORGANISMS THAT ARE BEST ADAPTED TO A SPECIFIC ENVIRONMENT SURVIVE AND PRODUCE MORE OFFSPRING THAN ORGANISMS THAT ARE NOT AS WELL ADAPTED

17. NATURAL SELECTION

18. THE POTENTIAL FOR A SPECIES TO INCREASE ITS NUMBERS BEYOND THE AREA’S CARRYING CAPACITY

19. OVERPRODUCTION

20. AN EXPLANATION, SUPPORTED BY MANY OBSERVATIONS AND/OR EXPERIMENTS, THAT CAN BE USED TO ACCURATELY EXPLAIN RELATED OCCURANCES

21. THEORY

22. THE INDIVIDUAL WHO CONTRIBUTED THE MOST TO OUR UNDERSTANDING OF THE PROCESS OF EVOLUTION; DEVELOPED THE THEORY OF NATURAL SELECTION

23. CHARLES DARWIN