Climate is the long-term average of the weather change and global warming is a climate change. It is the rise in surface temperature of the Earth.
This rise in temperature is due to natural causes, such as solar radiation combined with the natural greenhouse gases in the atmosphere, and to human activities, such as the use of fossil fuels, deforestation, breeding and intensive farming.
The gas responsible for global warming is the carbon dioxide and its behavior is like that of the glass in a greenhouse: it retains heat from the Sun and keeps the planet warm.
It follows a chain process. Global warming will cause the polar ice to melt. The melting ice will make the oceans overflow and coastal areas and their natural resources (food, water and variety of life forms) will be flooded.
Diseases will spread. Plant and animal species will become extinct due to habitat loss and other factors. The weather is going to get more violent and unpredictable. Many areas will get drier and deserts are a threat to the planet's capacity to support a fast-growing human population. These things have already started to happen. Ice is also more reflective of sunlight than land and water. Global warming can cause more sunlight to be absorbed by the Earth. The Earth’s temperature will increase further and it will cause more ice to melt.
Effects of global warming are an example of the complex, interactive systems monitored by satellites.