- Why do some insects have four wings instead of two?

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What is the real and imaginary parts of the principal value ofi^(log(1+i))? How do I decript this passcode (NmI2OTc0NmI2MTc0Nm)? Many thanks? Sapreste consigliarmi dei buoni profumi per ambiente? Divide 117 billion by 327 million? I have to prove that √(5n+7) is irrational, given n is a positive integer?