[Q]: During the summer Anthony found it was way too hot to be comfortable. He went out to his garage to get an old fan. The fan was spins on a metal bearing but because it is old it was slightly rusted. When he turned the fan on it spun very slow, struggling to move. He then decided to lubricate the bearing that rotates the fan blades and the fan started spinning normally. Given a lawn mower with a rusted blade, will it reqiore more or less work to operate than one with a normal blade?
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[A]: more

[Q]: David collects cigarette packs of different years. He found that two of his packs, pack A and pack B, are very different. Pack A is from before September 2012, and pack B is from after September 2012. He started searching on the internet to find out why the packs were different. Would pack B's health warning be more or less visible than pack A's?
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[A]: more

[Q]: Dan and Fred were friends. they studied Biology at the same University. Fred studied bird reproduction this semester, while Dan studied fish reproduction. Which friend studied less about eggs that can be fertilized either inside or outside of the body?
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[A]: Fred

[Q]: John wanted to revisit Aristotle's theory of tetrapods. To that end, he chose two tetrapods, tetA and tetB. An adult tetA was heavier than an adult tetB. Moreover, a tetA had longer gestation period than tetB. He needed to figure out how their characteristics fit Aristotle's theory. Which tetrapod would live shorter, tetA or tetB?
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[A]:
tetB