Evolutionary Process

3. The tailbone of humans is a _______ structure
8. He disproved the theory of spontaneous generation
9. Amphibians are the ancestors of reptiles. What is the name give to the gradual process of change of organisms over time?
10. The theory which talks about aliens bringing life to earth
12. The theory that is widely used to explain the origin of earth.
13. A fish which is named as a living fossil
14. the element used to determine age of fossils
15. The closest ancestors of birds and mammals

1. The evolving of novel species from older species.
2. Paleontology is the study of ______
4. The type of rocks in the crust of earth
5. What happens to a species of organisms when they cannot adopt to a certain environment?
6. Father of evolution.
7. Where did the first pre-cell originate?
11. A gas which was abundant in the early atmosphere