Examlex
Which of these is defined as exchanging one currency for another today?
Ozone Concentration
The measure of the amount of ozone present in a particular area of the atmosphere, critical for blocking harmful ultraviolet radiation.
Acid Rain
Precipitation that contains high levels of sulfuric or nitric acids, often resulting from the emission of sulfur dioxide and nitrogen oxides from human activities such as burning fossil fuels.
Air Pressure
The force exerted onto a surface by the weight of the air above it, which decreases as altitude increases.
Global Circulation
The large-scale movement of air through the earth's atmosphere, driven by heat from the sun, which distributes temperatures and precipitation around the globe.
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