Global Warming

• An increase in the average temperature of Earth’s near surface air and oceans since the mid-20^th century
• 4^th assessment report of IPCC: global temperature increased 74+0.18 degree C during the 20^th century.
• Caused by greenhouse gases
  • Water vapour, Co2, Methane, Nitrous Oxide, Ozone, CFCs (in order of abundance)
• Since the industrial revolution, the burning of fossil fuels has increased the levels of Co2 in the atmosphere from 280 ppm to 390 ppm.

Meghalaya PSC  Notes brings Prelims and Mains programs for Meghalaya PSC  Prelims and Meghalaya PSC  Mains Exam preparation. Various Programs initiated by Meghalaya PSC  Notes are as follows:-

• Meghalaya PSC  Mains Tests and Notes Program
• Meghalaya PSC  Prelims Exam 2017- Test Series and Notes Program
• Meghalaya PSC  Prelims and Mains Tests Series and Notes Program
• Meghalaya PSC  Detailed Complete Prelims Notes

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