Evolution Part 1

3. argued that gradual geological processes have gradually shaped Earth’s surface
6. The preserved remains or traces of an organism that is no longer living, usually found in sedimentary rocks
8. A fossil that is used to establish the age of the rock layers ex Trilobites
10. small volcanic islands where Darwin made many important observations
12. the type of selection process where plants and animals with useful traits are chosen
14. type of dating where depth of fossils help to determine their age
15. is an ideal sequence of rock layers that contains all the known fossils and rock formations on Earth, arranged from oldest to youngest.
17. one of the first scientists to propose that species change over time
18. rock-forming minerals preserve the internal structures of an organism

1. ship on which Darwin served as naturalist
2. developed a theory of evolution at the same time as Darwin
4. type of dating where radioactive isotopes are measured to determine fossil age
5. the type of selection process by which evolution occurs
6. an organism’s relative ability to survive and produce fertile offspring
7. law that states younger rocks lie above older rocks if the layers have not been disturbed
9. his theory of evolution unifies all of biology
11. argued that human populations grow faster than the resources they depend on
13. change in species over time
16. fish, insects, and plant leaves are often preserved as carbon films.