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Explore our collection of simple explanations for curious minds.

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What are boogers made of?

What came first, the chicken or the egg?

Why do we open our mouths really wide sometimes?

Why don't fish need to come up for air?

Why do tears come out of our eyes?

Why do green leaves turn red, orange, and yellow?

What are those swirly lines on our fingers?

What makes cats purr when you pet them?

How does a tiny seed become a big plant?

Why do we need to sleep every night?