Cause:
Global warming
Effect:
Ice at the North and South poles may melt causing sea levels to rise and floods to occur.
Which of the following can prevent the effect from happening?

Planting trees

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Use of unleaded petrol

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Use of leaded petrol

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Both (A) & (B)

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Solution

The correct option is D Use of unleaded petrol
Global warming is occurring because of an increase in global temperature. The greenhouse gases are increasing in the air because of the leaded fuel which is used in vehicles giving toxic gases or greenhouse gases and it can be prevented by using unleaded petrol.
This leads to the melting of ice at the North and South poles.

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