As you travel from the surface of the earth up through the atmosphere into outer space, the gases become

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.

glacial erosion, the picking up and movement of earth beneath a glacier, is also referred to as plucking. erosion and transportation of individual pieces of bedrock, especially large "joint block occur as a result of this glacial erosion. plucking is type of erosion in which rocks become frozen into the bottom and sides of the glacier.as the glacier moves downhill it 'plucks' the rocks frozen into the glacier from the ground.