➵ Hair doesn't turn grey. The follicles deposit color into each time that grows in. Over time, individual follicles stop producing pigment, and the next hair to grow comes in gray, then eventually white.

➵Lightning warps rocks at their very core. One zap of lightning can make a rock twice as hot as lava, deform its appearance, and alter the fundamental structure of the chemical bonds that holds it together.

➵Pangea, the supercontinent comes from Greek work meaning "enitre" and "earth".

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