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Preserved remains of once-living organisms 学び始める
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A sticky layer that surrounds the cell walls of some bacteria, protecting the cell surface and sometimes helping to glue the cell to surfaces. 学び始める
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To save; to keep from harm; to protect 学び始める
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学び始める
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a mark of a foot or shoe on a surface 学び始める
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to put into the ground and cover with earth 学び始める
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more than two but not many 学び始める
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学び始める
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small, solid pieces of material that come from rocks or living things 学び始める
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A mixture of rich soil and tiny rocks 学び始める
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A wetland ecosystem in which shrubs and trees grow 学び始める
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a hole in the ground made by an animal for shelter 学び始める
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A type of fossil formed when a shell or other hard part of an organism dissolves, leaving an empty space in the shape of the part. 学び始める
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a solid copy of the shape of an organism 学び始める
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学び始める
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The physical gap or interval between two objects 学び始める
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fading away of memory over time 学び始める
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to become or make something become firm, stiff, or solid 学び始める
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A scientist who studies fossils 学び始める
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a living being, especially an animal 学び始める
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学び始める
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学び始める
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to look at something carefully by attention to its parts 学び始める
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学び始める
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a series of x-ray photographs taken from different angles and combined by computer into a composite representation of a slice through the body 学び始める
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学び始める
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学び始める
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学び始める
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technique of joining two pieces of fabric edge to edge 学び始める
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the study of geographic phenomena by visiting places and observing how people interact with and thereby change those places 学び始める
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Marked by richness of growth, especially of vegetation. 学び始める
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学び始める
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学び始める
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学び始める
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学び始める
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Parts of something that are left after the rest is gone. 学び始める
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To keep something safe and stop it from being destroyed. 学び始める
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A group of animals or plants of the same kind. 学び始める
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No longer living anywhere in the world. 学び始める
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To slowly become a fossil over a very long time. 学び始める
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A small sign that something was there in the past. 学び始める
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To slowly break down or rot after death. 学び始める
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An animal that eats animals that are already dead. 学び始める
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Full of healthy, green plants. 学び始める
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From a time before people started writing history. 学び始める
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The slow way living things change over many generations. 学び始める
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An animal that hunts and eats other animals. 学び始める
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Information or signs that show something is true. 学び始める
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The complete disappearance of a species from Earth. 学び始める
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