Question: Q: Name the law that determines as to which rock layers are younger or older than others.    Choices:  - law of gravity  - geologic theory  - law of apposition  - law of superposition  A:
Answer: law of superposition

Question: Q: What type of device uses electromagnetic induction to change the voltage of electric current?    Choices:  - radioactive transformer  - hot transformer  - mechanical transformer  - electronic transformer  A:
Answer: electronic transformer

Question: Q: Living things need to take in nutrients so that they can grow and create what?    Choices:  - protein  - plasma  - hydrogen  - energy  A:
Answer: