Pointâofâsale transactionsâi.e., swiping a card at the time of purchaseâsecurely encrypt the. credit card data. Cards placed on file for future transactions, such as for express checkâout, use. tokens to access card data.
The outermost layer of Earth is the atmosphere. I say the atmosphere is the outermost layer, because it is as much a part of the of our planet as the atmosphere of other planets is a part of their definition.
The outermost chemical layer is the crust. The outermost physical layer is the lithosphere (the crust plus the attached uppermost mantle). The outermost chemical layer is the crust. The outermost physical layer is the lithosphere (the crust plus the attached uppermost mantle).