GLOBAL WARMING
Earth now is burning up..Last 20 years earth is hotest in 400years.
Global Warming make :
1. Extreme Weather
2.Thunder Strom
3.Heat wave
4.Wild Fire
Global warming can be prevent by make greenhouses,Growing plants,and stop using vehicle
Green House gases is increased 70% o due to human activities
Global warming happen because earth atmosphere is have to lot of Co2..now the Atmosphere Co2 is curency 385part per million(ppm),and every day get 2PPm.
source:
http://www.greenscroll.org/images/global-warming.jpg