Explications:
1. Carbon dioxides levels increase a lot the past 100 years.
2. The last 100 years rise 6.7 inches the sea level.
3. The 1880s hurricanes grow stronger.
4. 1880 the surface of the world's oceans become warmer.
5. The past 30 years Artic sea ice extent decrease by about 10 percent.
6. The past 10 years Some butterflies and foxes move father North.
