Climate Changes On Planet Earth And Its Effect On Desertification Increasing

Abstract

Planet Earth has witnessed different frequent intervals of increase and decline in temperature , nowadays our planet witnesses an obvious rising of temperature which becomes a serious threat to life on the Earth This phenomenon is known by different terms but the most well known term is Global warming .There are many reasons behind this phenomenon, some attribute it to the emanation of pollution gasses "CO2" to the atmosphere , by physical and human factors. Others said that possible causes of main global temperature flaetuations is due to the variations in sun brightness "luminosity" some others attributed this phenomenon by relating it to the changes happened in the movement of Earth around its orbit or around the sun and the movement of Earth plates tectonics.this phenomenon has a serious effects and disastrous results on human life, some of which are related to effect on increasing the decertification . another is related to rising the sea level. Both of them cause huge economic disasters and huge migration of people from one place to other.There are serious international efforts through the united nations and the international society to decrease or to limit the bad effects of the climate change or Global warming on the life of Earth by many conferences held since the 1950's till now .

Keywords

Climate Changes