- Last century: global temperature has increased rapidly – global warming.
- Temperature increase has been very fast; changes in climate are a result of human activities.
- Activities increase the concentration of greenhouse gases in the atmosphere. Concentration increases, more energy is trapped with global warming.
- Rising temperatures cause increased sea level, through melting of ice sheets and thermal expansion of water.
- Global sea level is currently rising at almost 2mm a year; predicted to increase to 8-16mm a year by 2100.
