Is it possible, or desirable, to produce a genetically engineered cat that doesn鈥檛 have an urge to kill wildlife?
Geraint Day, Swindon, Wiltshire, UK
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听
When two musical notes are an octave apart, one has double the frequency of the other yet we hear them as the 鈥渟ame鈥� note 鈥� a 鈥淐鈥� for example. Why is this?
Jon Dickinson, Sevenoaks, Kent, UK
听
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