arbon dioxide ??? ??? ??? saltation when wind lifts sediment off the ground and carries it a short distance ??? ??? ??? sediment weathered rock, bone fragments, soil, and other particles carried by wind, water, and ice ??? ??? ??? soil top layer of mineral and organic material on Earth's surface ??? ??? ??? stalactite chemical sedimentary rock hanging from the ceiling of a cave ??? ??? ??? stalagm