Stratosphere is rich in ozone gas. It contains the ozone layer.
The atmosphere. The stratosphere. The lower stratosphere and tropopause. The ozone layer. Pick one.
See "What is the ozone layer?"
The stratosphere has the most ozone in it. The ozone layer is located near the bottom of the stratosphere, and reaches a peak concentration of about 9 ppm.
No
Earth. It's the only planet with significant amounts of oxygen in the atmosphere, making up about 21%.
The atmosphere. The stratosphere. The lower stratosphere and tropopause. The ozone layer. Pick one.
The stratospheric region of the atmosphere is actually a region containing a thick layer of ozone gas which is known as the ozone layer. this ozone layer contains the maximum concentrations of ozone. thus the stratosphere can be regarded as the zone of the maximum concentrations of ozone.
See "What is the ozone layer?"
No.
Neritic Zones
stratosphere
Oxygen in the atmosphere is important for life for two main reasons. First, oxygen makes up the ozone layer. The ozone layer is in the upper part of the atmosphere, and is made of O3 molecules-a particular type of oxygen molecule. It blocks harmful radiation from the sun and keeps it from reaching Earth's surface. Without an ozone layer, intense radiation from the sun reached the early Earth's surface, making life almost impossible. Secondly, oxygen in the atmosphere is necessary for animals, including humans, to breathe. No animals would have been able to breathe in Earth's early atmosphere.
The stratosphere has the most ozone in it. The ozone layer is located near the bottom of the stratosphere, and reaches a peak concentration of about 9 ppm.
nitrogen-rich and oxygen-poor with some ozone
There is no "lowest layer of ozone". There are however ozone rich areas downwind of major industrial/urban centers. The ozone associated with photochemical smog in these areas impacts human health and the environment.
No
Simply put, if there were no atmosphere, there would be no life on Earth! The atmosphere protects the surface from the intensity of the sun's radiation, because gases and aerosols (tiny suspended particles or droplets) intercept and absorb some of it. This is why the ozone layer (a part of the stratosphere that has a high level of ozone) is so important -- ozone, or O3, is particularly efficient at absorbing ultraviolet light.Another reason that the atmosphere is so important is that it keeps the temperature relatively constant at the surface. It may not seem like it sometimes, but the Earth's temperature is quite stable. Just how stable is apparent when compared to the moon. The moon has no atmosphere, and the temperature difference between areas in shade and areas illuminated by the sun is more than 250 degrees C (almost 500 degrees fahrenheit)!.That being said, an atmosphere does not guarantee life. Venus has an atmosphere, but it is extremely hot, thick, and carbon dioxide rich -- and did I mention the sulfuric acid clouds?