Examlex
The fifth most frequent cause of death is _______, which is the result of oxygen deprivation to the brain.
Urban Areas
Regions characterized by high human population density and vast human-built features in comparison to the areas surrounding them.
Ratio
A quantitative relationship between two numbers showing the number of times one value contains or is contained within the other.
Atmospheric Layer
A region in the Earth's atmosphere differentiated by characteristics such as temperature and composition, including the troposphere, stratosphere, mesosphere, thermosphere, and exosphere.
Ozone
A molecule composed of three oxygen atoms, significant for its role in absorbing harmful ultraviolet radiation in the Earth's stratosphere.
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