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 Earth has many layers. The three main layers of the Earth are: The crust (The outermost layer of the Earth). The mantle (Middle layer of the Earth) and. The core (Inner layers of the Earth). The crust is the outermost layer of the Earth and the thinnest of the layers. The Earth's crust is where the mountains, hills, valleys, plains, lakes and oceans are formed. The mantle is the largest layer of the Earth. The mantle is much hotter than the crust, just as the core is much hotter than the mantle.