FAQs about Air Pollution

1. What is the difference between air and atmosphere?

The Air is the gas mixture that forms the Earth’s atmosphere, which remains around our planet thanks to the attraction of the force of gravity. The lower part of the atmosphere, the one that surrounds us directly, is what we colloquially call air.

The atmosphere is the Earth’s gaseous region, the outermost and least dense region of the planet. It is subdivided into troposphere, stratosphere, mesosphere, thermosphere and exosphere. The latter is the least dense and so dim that most of it is confused with outer space. The atmosphere, measured from the sea surface to the beginning of the exosphere is between 600 and 800 km thick. Of these, the troposphere corresponds only between 10 and 12 km thick, that is, less than 2%. However, in that narrow vault is concentrated all the terrestrial and aerial life of the planet. Three quarters of the atmospheric mass corresponds to the troposphere due to the force of gravity of the Earth.

In the troposphere, located between the ground and the stratosphere, there are clouds, rain, snowfall and almost all meteorological phenomena, in addition, commercial flights are made. It has the ozone layer that protects us from 90% of ultraviolet radiation. It is also the place where the natural and artificial greenhouse effect of the Earth occurs. In it is a large part of the biosphere, or sphere of life, where we inhabit and take the air almost all species on Earth. The first 500 meters of the atmosphere some authors call the “dirty layer” because it concentrates pollution, dust from deserts and volcanoes.

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