Explicaê

01

Increasing greenhouse gas concentrations will have many effects   Greenhouse gas concentrations in the atmosphere will continue to increase unless the billions of tons of our annual emissions decrease substantially. Increased concentrations are expected to:   

   These changes will   impact our food supply, water resources, infrastructure, ecosystems, and even our own health.     United States Environmental Protection Agency. Available at: http://www3.epa.gov/climatechange/science/future.html. Accessed on: oct. 30, 2015. (Extract)    

 

 

In the previous text, the United States Environment Protection Agency presents    

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