instruction:
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).
question:
Paragraph: Exhaling, or breathing out, decreases the size of the chest, which increases air pressure inside the lungs.
 Question: If Mary is running and race and begins to breathe hard, what happens to the air pressure in her lungs as she constricts her chest? 
 Choices: A)increases 
B)decreases
answer:
increases


question:
Paragraph: The farther the object is stretched or compressed, the greater its elastic potential energy is.
 Question: When we compress a spring down a lot what happens to the potential energy? 
 Choices: A)increases 
B)decreases
answer:
increases


question:
Paragraph: Because richer nations use more fossil fuels, they also cause more air pollution and global warming than poorer nations do.
 Question: Mona lives in a nation that uses a lot of fossil fuels. What would happen to her countries levels of air pollution if they were to decrease their usage? 
 Choices: A)increase 
B)decrease
answer:

decrease