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?

the cell cycle is the final answer! : )

there's no big difference.

explanation:

the only little different between a rabbit and bunny is just that bunnies are much smaller than rabbits. bunnies are basically baby rabbits.

the right is separation by density .

take the blood which is a good example of a heterogeneous mixture.

blood is a vital liquid in our body, which transports oxygen from the air to our lungs so we can breathe. it is also used to eject wastes, such as carbon dioxide, to bring cells and molecules of the immune system to the tissues, and to spread hormones throughout the body. it corresponds to plasma, red blood cells, white blood cells, platelets and hemoglobins combined.

in medical tests centrifugal force is used to separate the different components of the blood.

in general, the centrifugation will allow to separate and analyze the different components of the blood, to know if the rate of white blood cells in the blood of a patient, for example, is normal, and therefore to know if his system immune is integrity.

under the action of centrifugal force, the solid components in the blood are drawn to the bottom of the tube in which the blood is contained. the centrifugal force then acts as an accelerated settling. it separates plasma from red blood cells and white blood cells.