Increasing rates of energy utilization, deforestation and pollution emissions in the atmosphere have led to increased levels of greenhouse gases (CO2, CH4, NO,O3,CFC and H2O) in the atmosphere. This has resulted in an increase f global average temperature.
It is expected that this increase in average global temperature
will continue over the next century, and may reach as much as
(1-3 C). Actually, measured global average temperatures are observed
to increase gradually over the last decode. The physical, biological
and socioeconomic impacts associated with increasing global average
temperatures are widespread and include all sectors of human interest:
Agricultural and food, water resources, tourism, energy sources,
health and human settlements.