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|Why do oysters have pearls?||{{w|pearl|From Wikipedia}}: <blockquote>Pearls are formed inside the shell of certain mollusks as a defense mechanism against a potentially threatening irritant such as a parasite inside the shell, or an attack from outside, injuring the mantle tissue. The mollusk creates a pearl sac to seal off the irritation. Pearls are commonly viewed by scientists as a by-product of an adaptive immune system-like function.</blockquote> | |Why do oysters have pearls?||{{w|pearl|From Wikipedia}}: <blockquote>Pearls are formed inside the shell of certain mollusks as a defense mechanism against a potentially threatening irritant such as a parasite inside the shell, or an attack from outside, injuring the mantle tissue. The mollusk creates a pearl sac to seal off the irritation. Pearls are commonly viewed by scientists as a by-product of an adaptive immune system-like function.</blockquote> | ||
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− | |Why are ducks called ducks?||See {{w|Duck#Etymology}}. {{ | + | |Why are ducks called ducks?||See {{w|Duck#Etymology}}. {{W|wikt:duck|According to Wiktionary}}, the noun ''duck'' can be traced back to the {{w|Proto-Germanic language|Proto-Germanic}} word {{w|wikt:Appendix:Proto-Germanic/dūkaną|''dūkaną''}} ("to dive, bend down"), and, in turn, the {{w|Proto-Indo-European language|Proto-Indo-European}} {{w|wikt:Appendix:Proto-Indo-European/dʰewb-|''dʰewb-''}} ("deep, hollow"), which is the origin of the verb ''to duck''. The link between the noun and the verb comes from ducks' tendency to dive under water for short periods of time. |
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|Why do they call it the clap?||Paris' medieval Red Light district was called "les clapiers" (the rabbit cages), therefore people were getting {{w|gonorrhea}} there | |Why do they call it the clap?||Paris' medieval Red Light district was called "les clapiers" (the rabbit cages), therefore people were getting {{w|gonorrhea}} there |