Examlex
The minimum period of light variations are used to find the _ _ of the central engine in galactic cores.
Opposable Thumbs
A thumb that can be moved freely and independently to touch the other fingers on the same hand, allowing for precise manipulation of objects.
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.
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