Answer: 3rd line of defense, specific defense
Explanation:
2. A. Rubber is a conductor and transfers electricity from the wire.
3. B. Changing tides.
4. B. The fossils may have been moved by man, animals, or Earth's constructive and destructive processes.
5. A. They are produced by drought.
6. C. Stores heredity information.
7. D. Magnets have a set strength , while the strength of an electromagnet can be adjusted.
8. A. Temporary dam.
9. B. Invertebrates.
10. C. Human feces.
11. No answer.
12. A. Gas.
13. C. Increase the number of coils of copper he puts around the nail.
14. A. Sam is correct. It is not a physical change.
15. C. Landslides.
