History of the Scientific View on Schizophrenia as a Disease: It has been suspected for over a century that schizophrenia and manic-depressive disorder (bipolar disorder) are diseases of the brain. In 1837, Dr. W.A.F. Browne, the best-known English psychiatrist of his generation, wrote:
Best Answer: The atmosphere is divided into five layers. It is thickest near the surface and thins out with height until it eventually merges with space. 1. The troposphere is the first layer above the surface and contains half of the Earth's atmosphere. Weather occurs in this layer. 2. Many jet aircraft fly in the stratosphere because it is very stable.
Atmosphere is the gaseous envelope of air that surrounds the earth. The air extends as far as 620 miles above the surface of the earth. Scientists divide the earth's air into four layers: the troposphere, the stratosphere, the mesosphere and the thermosphere. Nitrogen makes up 78 percent of the world's atmosphere and oxygen makes up 21 percent. The last one percent consists mainly of argon and small amounts of other gases.