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No. Snakes are usually patterned to match the colouration of their natural habitat.

Stands for Return To Zero, so takes it to the zero mark

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1 ml = 10^-6 kl or 0.000001 kl

So:

20 ml = 20 * 10^-6 kl = 2*10^-5 kl or 0.00002 kl