Frequent tropical storms and melting of polar ice are the effects of which of the following options?

Global warming

Global warming refers to gradual increase in the average temperature of planet. Some of the effects of global warming are:

• Melting of polar ice which results in rise in the sea level and coastal flooding
• Disruption of drinking water supplies which are dependent on snow melts
• Frequent tropical storms due to change in the temperature
• Increase in the incidence of tropical diseases