In this task, you are given a question and answer for that. The answer will fill in the blank or will complete the unfinished question. Your task is to provide an explanation based on the given question or fill-in-the-blank statement, and answer.

Let me give you an example: Question: The government of Canada is considering implementing less carbon taxes across the country. If these taxes were implemented, the amount of carbon dioxide emissions in the country would be expected to 
 Answer: rise
The answer to this example can be: The carbon taxes encourage people to use less fossil fuel, which reduces carbon dioxide emissions.
Here is why: As mentioned in the input Question and Answer, the output statement constructs the explanation correctly. By decreasing the taxes, carbon dioxide emissions will rise, so the explanation is correct. 

OK. solve this:
Question: John was watching the particles as they interacted with each other. He found that the lower the pressure, the collisions were 
 Answer: Lower
Answer:
More particles inside the container means more collisions, and more collisions mean a higher pressure.