The Fossil is a series of organisms crowds! This is to save the evidence of history and geology of one type when the animals and plants mentioned it fell down and over time the fragile and the light of the body will be rotten rotting vegetation to be left the hard part of the body such as bone, the shell of a crab or a tortoise or skins, etc. the carcass of them shall be kept as the remains of the ancient process with the two sediment deposited on the carcass of and the solution of the mineral to replace the ruins of very quickly, bacteria can not grow when the firm has become the ruins of the ancient most of the remains of the living organisms will be retained. along the banks of the river, lake and the sea because the area has a small accumulation of the environment is quite calm the carcass cannot be destroyed, broken when the ruins of the ancient that are maintained in the rock. When the carved by the decay of such as water, wind or rain will appear to see natural also when the earthquake occurs or the movement of the earth the appearance of the rock tilt and sometimes the rock at the top is flushed out to the ruins of the ancient is displayed clearly.