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by nnain 1639 days ago
Well, nature does not use Tyres either.
1 comments
Turing_Machine 1639 days ago
It kinda does, in the form of hooves.

Hooves are better than t[iy]res in one way: they're self-renewing.

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nnain 1637 days ago
I meant in terms of the rotating motion, not wear and tear :)... since the OP was about Nature vs. Propellers.
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