(Question)
Wave frequency can be measured by counting the number of crests or compressions that pass the point in 1 second or other time period. The higher the number is, the greater is the frequency of the wave.  Having read the above passage, choose the right answer to the following question (choices are increases or decreases ):   If Milo increases the number of crests of his wave, what happens to the frequency of his wave increases or decreases?
(Answer)
increases


(Question)
Better farming techniques and machines increased the food supply and the distribution of food.  Having read the above passage, choose the right answer to the following question (choices are decreased or increased ):   Jonah's family was barely getting any food when they plowed the field by hand, but when they got less machines to help, the food supply decreased or increased?
(Answer)
decreased


(Question)
Fossils found at the lowest layer of rock would be the oldest, as these would have been buried for the longest time, whereas fossils found closer to the surface would be buried more recently and therefore be younger.  Having read the above passage, choose the right answer to the following question (choices are youngest or oldest ):   Everett went lower and lower to look at the rocks on the cliff. The highest rocks are likely youngest or oldest?
(Answer)
youngest