[Q]: Two farmers, Tom and Brad, applied different farming methods. Tom tilled his land, while Brad applied the no-till gardening method. Given the paragraph above, please answer correctly the following question: Which farmer caused an increase in the predator populations?
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[A]: Brad

[Q]: Mark was attending the music festival in his city. First, he went to stage one, where the music was playing in high decibel. Then he went to stage two. There the music was playing in low decibel. He kind of liked the latter one. Given the paragraph above, please answer correctly the following question: Which stage would be louder, stage one or stage two?
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[A]: stage one

[Q]: The students studied two ponds. Class A studied a pond filled with protozoa, while class B studied a pond with almost no protozoa. Given the paragraph above, please answer correctly the following question: Which class observed more protozoa predators keep many bacterial populations under control?
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[A]: Class A

[Q]: In the Kenya-Tanzania border Kenyan grassland gradually merges into Tanzanian forest. Though they had similar soil to start with millions of years ago, today they are two different habitats. At present, Kenya has one of the largest contiguous grassland in Africa. On the other hand, Tanzania boasts one of the largest forest cover in Africa. Given the paragraph above, please answer correctly the following question: Which place would store more organic matter in the "O horizon", Kenya or Tanzania?
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[A]:
Tanzania