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Facts about Air

Air

Plants that perform photosynthesis take up carbon dioxide from the air and release oxygen.

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Air

Lead in the air is produced mainly by lead smelters, and also by waste incinerators, utilities, and lead-acid battery manufacturing plants.

Air

Water vapor in the air is part of the water cycle that produces precipitation (such as rain and snow) that replenishes moisture in the soil.

Air

Common air pollutants include carbon monoxide (CO), nitrogen oxides (NOx), sulfur oxides (SOx), ozone, and particulate matter (PM).

Air

The stratopause (at the top of the stratosphere) has a temperature of about 270K—fairly close to the temperature at ground level.

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Given that it lies between the maximum altitude for most aircraft and the minimum altitude for most spacecraft, this region of the atmosphere is directly accessible only through the use of sounding rockets.

Air

Commercial airliners typically cruise at an altitude near 10 km in temperate latitudes, in the lower reaches of the stratosphere.

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Air

Nitrogen oxides also contribute to the formation of particulate matter in the air and nutrient overload in ponds and lakes, reducing water quality.

Air

The troposphere (from the Greek words tropos = to turn or mix, and sphaira = ball) is the atmosphere's lowest and densest layer, and it is also known as the lower atmosphere.

The major sources of air pollution include:the combustion of coal, oil, gas and other fuels for generating electricity;burning gasoline, diesel and other fuels for transportation;emissions from various industrial processes;burning wood and other fuels for heating and cooking;More items...

A Factsheet is available for each of these air pollutants:Carbon monoxide.Lead.Nitrogen dioxide.Ozone.Particles.Sulfur dioxide.

Here are some natural and human activities that cause air pollution. Air pollution can result from both human and natural actions. Natural events that pollute the air include forest fires, volcanic eruptions, wind erosion, pollen dispersal, evaporation of organic compounds and natural radioactivity.

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Most of this air pollution we cause results from the burning of fossil fuels, such as coal, oil, natural gas, and gasoline to produce electricity and power our vehicles. Carbon dioxide (CO2) is a good indicator of how much fossil fuel is burned and how much of other pollutants are emitted as a result.

Air pollution (say: po-loo-shun) occurs when gases, dust particles, fumes (or smoke) or odour are introduced into the atmosphere in a way that makes it harmful to humans, animals and plant. This is because the air becomes dirty (contaminated or unclean). ... Things that pollute the air are called pollutants.

Air pollution is contamination of the indoor or outdoor environment by any chemical, physical or biological agent that modifies the natural characteristics of the atmosphere. Household combustion devices, motor vehicles, industrial facilities and forest fires are common sources of air pollution.

​Outdoor air is often referred to as ambient air. The common sources of outdoor air pollution are emissions caused by combustion processes from motor vehicles, solid fuel burning and industry. ... The most common air pollutants of ambient air include: Particulate matter (PM10 and PM2.5)Apr 29, 2013

Long-term health effects from air pollution include heart disease, lung cancer, and respiratory diseases such as emphysema. Air pollution can also cause long-term damage to people's nerves, brain, kidneys, liver, and other organs. Some scientists suspect air pollutants cause birth defects.Apr 4, 2011

Air pollution occurs when harmful substances including particulates and biological molecules are introduced into Earth's atmosphere. It may cause diseases, allergies or death of humans; it may also cause harm to other living organisms such as animals and food crops, and may damage the natural or built environment.

There are four main types of air pollution sources: mobile sources – such as cars, buses, planes, trucks, and trains. stationary sources – such as power plants, oil refineries, industrial facilities, and factories. area sources – such as agricultural areas, cities, and wood burning fireplaces.Jan 3, 2017

The major sources of air pollution include:the combustion of coal, oil, gas and other fuels for generating electricity;burning gasoline, diesel and other fuels for transportation;emissions from various industrial processes;burning wood and other fuels for heating and cooking;More items...

Gravity is also what keeps us on the ground. Without gravity, we would all float away into space! With airplanes, gravity works against lift by pulling the airplane toward the ground. Thrust is the force that causes the plane to move forward through the air.

Advantages of Air Transport:The following are the main advantages:High Speed:Minimum Cost:Strategic Importance:Easy transport of costly and light goods:Free from physical barriers:Useful for Agriculture:Useful in natural calamities:More items...

It extends from the earth's surface to an average of 12 km (7 miles). The pressure ranges from 1000 to 200 millibars (29.92 in. to 5.92 in.). The temperature generally decreases with increasing height up to the tropopause (top of the troposphere); this is near 200 millibars or 36,000 ft.

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