On a crisp autumn morning maria stoop on the balcony of her childhood home in Aiaska.sipping her coffee picturesque view of the glacier that had always been a part of her life Maria realized that the gradual disapearance of the glacier wasn’t just a local phenomenon-it was a global crisis driven by greenhouse gases
Greenhouse gases are atmospheric gases that absorbe and re-emit heat to keep the planet warm enough to support life .
The Science Behind greenhouse Grases:
Greenhouse gases, including carbon dioxide ,methane,and nitrous oxide
Methane : Emited from livestock ,agriculture ,landfils, and the production of fossil
Nitrous oxide : Generated by agricultural activities, industrial processes ,and the combustion of fossil fuels and waste.
Environnemental impact;
We’ve watched the ice retreat more and more each year » says john another lifelong Alaskan resident …
Maria’s balcony view was a stark reminder of the urgent need to address the greenhouse gas crisis
Each one of us has a role to play in mitgatking this global threat- it’s too late .The future of our planet depend on the actions we take today
A number of processes influence greenhouse gas concentration .
some , such as tectonic activities , operate at timescales of millions of years , whereas others, such as vegetation , soil, wetland, and ocean sources and sinks , operate at timescales of hundredes to thousand of years . Human activities -especially fossil-fuel combustion since the Industrial Revolution- are responsible for steady increases in atmospheric concentrations of various greenhouse gases ,especially carbon dioxide , methane ,ozone.
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