The pupil automatically gets bigger or smaller to let more or less light in as needed. Having read the above passage, choose the right answer to the following question (choices are smaller. or larger ): Jim looked at his cat's eyes on a bright sunny day, then he looked at the eyes when the cat was in very low light inside the house. In the high light condition, the cat's pupils well be smaller. or larger?
smaller.

A: As the car approaches the radar gun, the reflected microwaves get bunched up in front of the car. Therefore, the waves the receiver detects have a higher frequency than they would if they were being reflected from a stationary object. The faster the car is moving, the greater the increase in the frequency of the waves. Having read the above passage, choose the right answer to the following question (choices are higher or lower ): Officer Ricky points a radar gun at a car. A slow car likely has higher or lower frequency waves bouncing off of it?
lower

Q: Bigger stars produce more energy, so their surfaces are hotter. Having read the above passage, choose the right answer to the following question (choices are more energy or less energy? ): Compared to the Sun, which is an average sized star, would VY Canis Majoris, the smallest known star, produce more energy or less energy??
A: less energy?

Question: Older rocks are at the bottom and younger rocks are at the top. Having read the above passage, choose the right answer to the following question (choices are older or younger ): Tom conducted an archaeological dig and compared some of the rocks he found. He noticed that the rocks at 20 feet deep were older or younger than the rocks at 2 feet deep?
Answer: older

*Question*
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 higher in Chicago or Mexico City?
**Answer**
Chicago

Its harder to overcome friction between heavier objects and the floor than it is between lighter objects and the floor. Having read the above passage, choose the right answer to the following question (choices are sack of unpopped popcorn or sack of popped popcorn? ): If you tried to push a sack of unpopped popcorn or a sack of popped popcorn, both of the same volume, would it be easier to push the sack of unpopped popcorn or sack of popped popcorn??
sack of popped popcorn?