WhatsApp is especially popular with end users who do not have unlimited text messaging In addition to basic messaging, WhatsApp provides group chat and location sharing options. Technically speaking, WhatsApp uses a customized version of the open standard Extendable messaging and presence protocol. WhatsApp Inc. was founded in 2009 by Brian Acton and Jan Koum, both veterans of Yahoo
1. If there isn't enough food, water can't continue our journey.
The sunspot has a central dark area which is called the Umbra, which appears dark because it's cooler than the rest of the sun's surface, with some lighter spots, and that center is surrounded by a lighter filamentary area, called the Penumbra, that flows outward. Hope this helps!:)<span />
