Which of these is a major cause of Lung cancer?

UV rays

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Tobacco

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Junk food

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Alcohol

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Solution

The correct option is B Tobacco
Cigarette smoking is the principal risk factor for the development of lung cancer. About 22% of all cancer deaths are related to the use of tobacco and consequently, they comprise the single largest group of cancer deaths that are potentially preventable.

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Assertion [A]: UV radiation damages to the ozone layer.
Reason [R]: The ozone hole has been the major cause of global warming and climate change.

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