When a person smokes there are chemicals released by the tobacco that enter the lungs. Because the lungs have to work harder to remove the chemicals, the body has to work harder to get the air needed to survive. Having read the above passage, choose the right answer to the following question (choices are increase or decrease ): If Mona is a smoker, but decides to stop smoking, what happens to the difficulty her lungs experience in removing chemicals from the air increase or decrease?
decrease

More pollutants mean poorer air quality. Having read the above passage, choose the right answer to the following question (choices are Chicago or Mexico City ): Michael is studying the air quality of various cities. He finds that there are many more pollutants in the air in Mexico City, than there are in the air of Chicago. Therefore, the air quality will be lower in Chicago or Mexico City?
Mexico City

Q: Electrons at lower energy levels, which are closer to the nucleus, have less energy. Having read the above passage, choose the right answer to the following question (choices are closer or further away ): Mona is measuring electrons and their energy levels for a school science project. Some electrons are closer to the nucleus compared to others. Do closer electrons or electrons that are further away have less energy closer or further away?
A: closer

Question: The density of the atmosphere decreases with an increase in the height above sea level (altitude). Having read the above passage, choose the right answer to the following question (choices are dense or thin ): Yolanda moved to Florida where it is at sea level. The atmosphere here is considered dense or thin?
Answer: dense

*Question*
Compared with a less powerful device, a more powerful device can either do more work in the same time or do the same work in less time. Having read the above passage, choose the right answer to the following question (choices are decrease or increase ): If Mona upgrades her old computer to a more powerful model, what happens to the amount of work her computer can do decrease or increase?
**Answer**
increase

*Question*
If the gas is heated, the particles will move faster as they gain more energy. Having read the above passage, choose the right answer to the following question (choices are gain energy or lose energy. ): Bob cools down some gas at the plant. When he does this, the gas particles move slower and gain energy or lose energy.?
**Answer**
lose energy.