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of precious fossils they left behind offer important clues and evidence that we can use to study.....more
and starve to death. Unlike other herbivores, the elephant doesn't use all of its cheek teeth at the same.....more
and behavior. Paleontologists can use these features to classify each mammal and study how they relate.....more
marcasite than pyrite in Nature.Similar to pyrite, the major use of marcasite is to extract sulfur." 晶系:斜方 集.....more
GoldNative gold is the major source of gold we use and it has good ductility and conductivity of heat.....more