It's the Deforestation

Forests are cut down for many reasons, but most of them are related to money or to people’s need to provide for their families. Forests still cover about 30 percent of the world’s land area, but swaths the size of Panama is losing each and every year.

Plants and trees help remove heat-trapping carbon dioxide gas from the air by storing it in their leaves, wood and roots and soils. When plants and trees are destroyed, these stored carbon dioxide gases will released into the atmosphere, where it contributes to climate change. Deforestation and land use change contributes approximately 20 to 25 percent of the carbon emissions that cause the climate change.

According to the report published by the Oxford-based Global Programme, which shows that the rampant slashing and burning of tropical forests is second only to the energy sectors as a source of greenhouses gases.