Order the events as they would appear in levels of organization from smallest to largest. __1__ Arctic Tundra along with the grasslands, oceans, and deserts __2__ fresh cold water, Pine tree, Dry Grass and small plants, Caribou, __3__ Caribou __4__ Pine tree, Dry Grass and small plants, Caribou __5__ Group of Caribou __6__ Caribou grazing in the dry climate and cold temperatures of the Arctic Tundra