You are given a short paragraph, a question and two choices to answer from. Choose the correct answer based on the paragraph and write the answer(not the key).

Q: Paragraph: The higher up a food chain that humans eat, the greater the levels of toxic metals they take in.
 Question: A human who eats an animal that is low on the food chain should take in _____ toxic metals. 
 Choices: A)more 
B)less

A: less
****
Q: Paragraph: With higher frequencies, the microwaves also have more energy.
 Question: As waves on the ocean shrink in size and number they have. 
 Choices: A)more energy 
B)less energy

A: less energy
****
Q: Paragraph: The main law is the law of superposition. This law states that deeper rock layers are older than layers closer to the surface.
 Question: John was looking at the rock layers at the bottom of the cliff. He saw that as the layers became deeper, they also became 
 Choices: A)Newer 
B)older

A:
older
****