Which of the following can be recognized as an "Effect" of global warming?

Melting in polar ice

Global warming is the long-term warming of the planet's overall temperature. It refers to the increase in the average temperature of the planet. Some of the effects of global warming are:

• Melting of polar ice, resulting in rise in the sea level and coastal flooding
• Disruption of the drinking water supplies, which is dependent on snow melts
• Extinction of species and frequent storms due to change in temperature 
• Increase in the number of tropical diseases