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Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Term
Definition
show hard translucent fossilized resin produced by extinct coniferous trees of the Tertiary period, typically yellowish in color.  
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Fossil   show
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Cast   show
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Index Fossil   show
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show a hollow container used to give shape to molten or hot liquid material (such as wax or metal) when it cools and hardens.  
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Permineralization   show
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show a fossil of a footprint, trail, burrow, or other trace of an animal rather than of the animal itself.  
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show an igneous intrusion is always younger than the rock it cuts across  
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Geologic time   show
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show states that layers of sediment initially extend laterally in all directions; in other words, they are laterally continuous  
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show states that layers of sediment are originally deposited horizontally under the action of gravity  
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Relative Age   show
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show the time taken for the radioactivity of a specified isotope to fall to half its original value  
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show is a core sample that is typically removed from an ice sheet  
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Isotope   show
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show a method of dating geological or archeological specimens by determining the relative proportions of particular radioactive isotopes present in a sample.  
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show the action or process of differentiating.  
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Outgassing   show
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Supercontinent   show
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Pangaea   show
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show a process in which a section of the earth's crust is folded and deformed by lateral compression to form a mountain range.  
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Evolution   show
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show the process whereby organisms better adapted to their environment tend to survive and produce more offspring  
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