TEXTS:

 

http://www.livestrong.com/article/170241-global-warming-facts-for-children/ (1)

http://www.livestrong.com/greenhouse-gas-effects/ (2)

http://www.livestrong.com/article/206408-renewable-non-renewable-items/ (3)

http://www.globalpost.com/dispatch/news/science/120827/arctic-sea-ice-hits-record-low-and-it-will-get-lower   (6)

http://jantamaya.hubpages.com/hub/how-to-save-the-environment-recycling-reusing-composting (8)

http://roberthughes.hubpages.com/hub/ten-ways-to-reduce-pollution-in-the-environment (9)

http://courtandnancy.hubpages.com/hub/The-Ice-Age-Cycle-Hypothesis-Mans-disruptive-influence