[Q]: John is a biologist. Last summer, he was studying the evolution of two different salamander species, species A and species B. Species A salamander was Gold-striped salamander while species B salamander was fire salamander. He found it interesting that they took different approaches to adapt to different habitats. Which species would be less successful in reproduction, Species A or species B?
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[A]: species A

[Q]: David was studying the processes involved in a machine. He collected a simple machine. He tagged it as case A. To compare it with compound machines, he collected two compound machines, case B and case C. Case B is a compound machine with few simple machines. And, case C is a compound machine with many simple machines. Would case A have greater or smaller mechanical advantage than case B?
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[A]: smaller

[Q]: Two engineering students learned about petroleum products, While Dan learned more about plastics, Jim learned about fuels. Which student learned less about fuels for trucks?
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[A]: Dan

[Q]: Nate and Andy were two zoologists. They have been studying the characteristics of nocturnal and diurnal animals. Andy studied nocturnal animals, while Nate studied diurnal animals. Which zoologist learned more about animals that are active during the night?
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[A]:
Andy