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What is the primary function of the ozone layer?
To filter UV radiation
To provide oxygen
To regulate temperature
To prevent global warming
To filter UV radiation
The ozone layer is a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet radiation. Located primarily in the stratosphere, it shields living organisms from harmful UV rays which can cause skin cancer and cellular damage.
The ozone layer is a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet radiation. Located primarily in the stratosphere, it shields living organisms from harmful UV rays which can cause skin cancer and cellular damage.
The stratosphere contains about 90 percent of atmospheric ozone, located between 10 to 50 kilometers above Earth's surface, discovered by French physicists Charles Fabry and Henri Buisson in 1913.
Ozone (O3) is an allotrope of oxygen found mainly in the stratosphere.
The ozone layer absorbs approximately 97 to 99 percent of the Sun's harmful ultraviolet light.
Depletion of the ozone layer is primarily caused by chlorofluorocarbons (CFCs) and other ozone-depleting substances.
The Montreal Protocol (1987) is a landmark international treaty designed to protect the ozone layer by phasing out ozone-depleting substances.
Option B is incorrect because atmospheric oxygen is primarily present as diatomic oxygen (O2) rather than ozone.
Options C and D are incorrect because the ozone layer's primary physiological function is shielding radiation, rather than broad temperature regulation or acting as the main driver of global warming.
A is correct тАФ The primary function of the ozone layer is to filter harmful ultraviolet radiation from the Sun.
Environment questions in competitive exams frequently test the difference between the Montreal Protocol (ozone protection) and the Kyoto Protocol (greenhouse gas reduction).
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