Deforestation

Deforestation: 

• Deforestation refers to the loss of forest cover; land that is permanently converted from forest to agricultural land, golf courses, cattle pasture, home, lakes or desert. 
• The FAO ( Food and Agriculture Organization of the UN) defines tropical deforestation as “change of forest with depletion of tree crown cover more than 90%” 
• depletion of forest tree crown cover less than 90% is considered forest degradation

Deforestation is considered to be one of the contributing factors to global climate change. Problem caused by deforestation is the impact on the "Global Carbon Cycle". 

• Gas molecules that absorb thermal infrared radiation are called greenhouse gases. 
• If greenhouse gases are in large enough quantity, they can force climate change.

While oxygen (O2) is the second most abundant gas in our atmosphere, it does not absorb thermal infrared radiation, as greenhouse gases do. Carbon dioxide (CO2) is the most prevalent greenhouse gas.