[Q]: Hydrologists studied two samples of rain water. Jim studied an acid rain sample from a nearby city, and Dan studied a sample of water from another town. Which hydrologist learned that acid rain falls in forests?
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[A]: Jim
input: Please answer the following: Environmental scientists are trying to find a solution to reducing the harmful effects of chemicals on the environment. To that end, they developed a transgenic crop with the help of Bt toxin - they referred to it as case A. To test the effectiveness of this new crop they also studied Bt toxin spray - they referred to it as case B. They need to figure out which case is safer for the environment. In which case the Bt toxin would not bind to the insect's gut wall, case A or case B?
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output: case B
Please answer this: David is an entomologist. He recently got interested in ants and their behaviors. To that end, he studied a group of ants, which be labeled as case A. To compare ants with other ant like creatures he studied another hymenopteran group, which he labeled as case B. Moreover, he noticed two distinct trails made by the ants, trail A or trail B. Trail A was followed by many ants, but trail B was abandoned by them. Which trail would more likely be shorter, trail A or trail B?
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Answer: trail A
Problem: Two friends read about respiratory systems. Paul read more about the lungs of mammals, while Pete read more about the lungs of frogs. Which student read less about alveoli?

A: Pete
Problem: Given the question: Two farmers had neighboring parcels of land. Bob had a nice parcel of old growth forest, while the other farmer, named Bill , had a similar sized parcel covered in grasslands. Which farmer observed decreased migration of weathering products in the soil?
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The answer is:
Bill
Problem: The ozone layer helps organisms by protecting them from Sun's ultraviolet radiation. To find the usefulness of ozone layer Mike wanted to see how much ozone are there in the atmosphere. He then collected three samples of atmosphere, sample A sample B, and sample C. Sample A was collected from the upper portion of the stratosphere. Sample B was collected from the lower portion of the stratosphere. Sample C was collected from the lower atmosphere. Which sample would have lower concentration of ozone, sample A or sample B?

A:
sample A