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I need help on the Age of Earth Unit Test, Unit 7, Lesson 8. I'm going to put my answers below, could someone help me check them?

1. The fossil is older than the layer of rock it was formed in
2. The fault is younger than the layers of rock based on the law of crosscutting.
3. Both laws describe the relative ages of rocks.
4. It only works for organisms that died Les's than about 60,000 years ago.
5. Carbon dating is used for absolute dating, but index fossils are not.
6. Ammonites existed for a relatively limited period of time.
7. Plate tectonics
8. It existed in the Permian period.
9. Magma rising to the ocean floor at mid-ocean ridges.
10. They begin deeper in Earth's surface.
11. They are younger and form through the cementation of sediments.
12. If a supercontinent did not exist, it could have been a smaller continent that ended up being divided over time with plates moving.

Could someone please check my answers? I would really appreciate it!!

1. Correct
2. Correct
3. Correct
4. Incorrect - Carbon dating can be used for organisms that died up to about 60,000 years ago.
5. Incorrect - Index fossils can be used for absolute dating.
6. Correct
7. Incorrect - Plate tectonics is a process, not a period.
8. Incorrect - Ammonites existed in the Mesozoic period.
9. Correct
10. Incorrect - They begin at Earth's surface.
11. Correct
12. Correct