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Peta

Peta (symbol: P) is a prefix in the SI system of units denoting 1015, or 1 000 000 000 000 000.

In computer science peta can sometimes mean 1 125 899 906 842 620 (10245 or 250), instead of 1 000 000 000 000 000, especially when used to prefix the byte, giving a petabyte.



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Penguins

... resembled modern penguins. The links between other bird orders and penguins are still unknown. A distant relationship between penguins and petrels is assumed, but not ...