GLOBAL WARMING

We have heard, seen and read about Global Warming, but do we really know it's cause and effects? Observe the following video.
www.youtube.com/watch?v=oJAbATJCugS
(National Geographic- Global Warming 101)
www.youtube.com/watch?v=3n31Y3Eeqic


bCopy and answer the following questions.

1. What activity has driven temperatures up?
2. What fossil fuels have been released since the Industrial Revolution?
3. What do these fossil fuels release into the air?
4. What is the greenhouse effect? Describe it.
5. Which were the hottest years registered in the planet?
6. What effects will global warming have?

Watch the following video in Spanish in order to complement your information
http://www.blogger.com/post-create.g?blogID=2789353495691000383