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Extend/Evaluate: Climates are changing and that change is observable in the atmosphere as well as on land and in the oceans. TD:Climate change. Scientists have been studying the climate change for some time as well as Natives have also observed these changes. Dolly Garza, Tlinget/Haida scientist, has studied and recorded many changes in the Arctic egosystems. Pollutants and contaminents, PCB's gathered at the lower latitudes are transported quickly, within days, through the atmosphere to the Arctic and its animals. Many of the higher level food chain animals have been found with high levels of contaminents in their bodies.
TD:Contaminents in Arctic Food Chain
Once again "change" is upon us. We have contributed to the change in our atmosphere, most of it not so positive. So now we must make some changes in the treatment of this planet. Yes, it is true that the largest impact has come from the higher populations that are located at lower latitudes, but the highest impact has been seen at the lower populations at the higher latitudes, the Arctic regions. But commonly, as in all of us, we must work together to help this Earth we reside. Using solar, hydro and wind power instead of fossil fuels. Making use of our reuseable resources instead of using the nonreusable that are contaminating the planet.
I appreciate your references to TD resources. It's good to know which class resources are useful.
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