How are carbon dioxide emissions affecting earths' natural cycle of temperature change?

The earth has natural carbon and water cycles that support the greenhouse effect in the atmosphere. The earth's surface it heated by radiation from the sun, in normal conditions these radiations are reflected back. Carbon dioxide and other greenhouse gases trap this radiation and prevent much of it from escaping into space. This the natural greenhouse effect which keeps the earth comfortably warm for us. It is as old as life itself.

Two hundred years ago man started burning fossil fuels for industry, transport and generating electricity. This coal and oil contained carbon that had laid underground for millions of years. Burning it released all the extra carbon dioxide to add to the greenhouse gases in the atmosphere.

At the same time we also began seriously cutting down our great forests. Forests absorb carbon from the atmosphere and store it in the wood. About half the weight of a tree is carbon.

Both these things mean there is more carbon dioxide in the atmosphere. This CO2 is trapping more of the sun's heat, and thus there is a rise in temperature of the earth and we call it global warning.