Public Domain. Courtesy of. Definition: Christianity is a monotheistic religion whose adherents believe that Jesus of Nazareth is the son of God and their savior. Christianity developed out of a sect of Judaism that believed Jesus was the messiah prophesied in the Old Testament.The main tenet of Christianity is that Jesus was resurrected.ublic Domain. Courtesy of. Definition: Christianity is a monotheistic religion whose adherents believe that Jesus of Nazareth is the son of God and their savior. Christianity developed out of a sect of Judaism that believed Jesus was the messiah prophesied in the Old Testament.
The cryosphere is the component of the Earth that composed of all solid, frozen water found on Earth. The cryosphere includes water storage areas such as glaciers, iceburgs, snow-covered areas, and sea ice. The cryosphere expands and contracts over the course of the months as average temperatures across the globe fluctuate.
The stratosphere, mesosphere and lowest part of the thermosphere are collectively referred to as the middle atmosphere, which spans heights from approximately 10 kilometres (33,000 ft) to 100 kilometres (62 mi).octilucent clouds are located in the mesosphere. The upper mesosphere is also the region of the ionosphere known as the D layer. The D layer is only present during the day, when some ionization occurs with nitric oxide being ionized by Lyman series-alpha hydrogen radiation.