I need help with my test review! (45 POINTS) 1. what can fossils show scientists?
2. how is mold different than a cast?
3.how is mold different than a cast?
4.what is a trace fossil?
5. how does mineralization occur? how does carbonization occur? how do molds and casts form? how do trace fossils occur? how does original material occur?
6. what is meant by the "Law of Supervision"?
7. What is "relative age dating"? How can it be done?
8.What is "absolute age dating?"
9. How does the "Law of Supervision" 'tell' us about relative age dating?
10.How many mass extinctions have there been?
11. what are some ways these extinctions may have happened?
12. why would these events cause extinction? (be specific)
13.how did plate tectonics 'help' evolution of species?
14. what is meant by "biological evolution"?
15.what is variation? (genetic variation)
16. How is artificial selection different than natural selection?
17. What can we study to show similarities and differences between organisms?
18. what is meant by survival of the fittest?