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Plant Fossils
Term | Definition |
---|---|
form | to make |
layer | a level of material, such as a type of rock or gas, which is different from the material above or below it, or a thin sheet of a substance層;塗層 |
mark | sign, scratch, disturbance of the top layer of something |
underground | below the earth's surface |
careful | giving a lot of attention to what you are doing so that you do not have an accident, make a mistake |
understand | to know the meaning of something or why something works |
fossil | a bone, a shell or the shape of a plant or animal which has been preserved in rock for a very long period |