Read the extract and answer the following question- Increased vehicular traffic, haphazard urban settlements and poor roads lead to frequent traffic snarls and road accidents as also vehicular pollution, which has assumed alarming proportions. It is estimated that nearly 40,000 people succumb to air pollution every year in major cities of India. High-level emissions of smoke and poisonous gases cause global warming and depletion of the ozone layer, affecting the weather pattern. Summers are warmer and prolonged. Thus, it is imperative that pollution control norms are implemented and defaulters booked. (Q.) Global warming and depletion of the ozone layer is caused by- *
Vehicular traffic
Emissions of smoke and poisonous gases
Urban settlements
Population growth
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vehicular traffic..........................
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