4 ms·

Well, nature does not use Tyres either.

• Turing_Machine 5y ago
  It kinda does, in the form of hooves. Hooves are better than t[iy]res in one way: they're self-renewing.
  • nnain 5y ago
    I meant in terms of the rotating motion, not wear and tear :)... since the OP was about Nature vs. Propellers.