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: More particles inside the container means more collisions, and more collisions mean a higher pressure.
 Question: What happens to the pressure inside of Jim's beaker if he decreases the amount of collisions between particles inside of it? 
 Choices: A)decreases 
B)increases
[A]: decreases


[Q]: Paragraph: For example, more people on the Earth means more people contributing to global warming and pollution.
 Question: What will happen to the levels of pollution on Earth if the population decreases? 
 Choices: A)they will rise 
B)they will fall
[A]: they will fall


[Q]: Paragraph: A higher-frequency wave has more energy than a lower-frequency wave with the same amplitude.
 Question: A wave with less energy than another will have a _____-frequency. 
 Choices: A)lower 
B)higher
[A]:
lower