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.
Geologists now know that the Earth's outermost layer, the lithosphere, is divided into independently moving plates into which the continents are embedded. The plates float on a layer called the athenosphere. There are different types of plate boundary.