1. Global warming is the long-term increase in the average temperature of the Earth's climate system.
2. 1. The use of alternative energies will help planet earth to reduce global warming. 2. Starting to use hybrid cars will help reduce global warming.
3. Predictions: 1. Scientists believe that the temperature in the next 50 years will increase by 3 ° C. 2.It is believed that it will cause droughts, some places flooded by the melting of the poles raising the sea level.
