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Pts! Hey, Smarty Pants. Welcome to another exciting episode of SmartEQ, where I, the trusty

narrator, answer questions from you, the Smarty P pants. This week we've got some sharp ones,

some spooky ones, and even a musical mystery. Let's go. Our first question comes from Oliver,

who asks, why are shark teeth so sharp? Fantastic question, Oliver. Sharks need sharp teeth,

because they are predators that eat fish,

seals, and sometimes even larger prey. Their teeth are designed to slice, tear, and grip,

slippery animals. Also, sharks have multiple roves of teeth. When one tooth breaks or falls out,

another one moves forward like on a conveyor belt. A shark might go through tens of

thousands of teeth in its lifetime. And because they're made of dentin, like your teeth, but coated in

super strong an animal, they stay razor sharp for chomping. Next, Kai in Toronto asks, why are cats

afraid of water? Believe it or not, Kai, not all cats hate water, but many do.

And here's why. Cats evolved in dry desert-like areas,

...