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Unit 7 Vocabulary
Terms in this set (10)
A type of rock that forms when layers of sediment are pressed together.
An impression of an organism, formed when sediment hardens around the organism.
The remains or traces of a plant or an animal that lived long ago.
A model of an organism, formed when sediment fills a mold and hardens.
The process of moving sediment from one place to another.
The breaking down of rocks on Earth's surface into smaller pieces.
The dropping or settling of eroded materials.
Fuel such as coal, oil, and natural gas formed from the remains of once-living things.
A period in which a large number of species becomes extinct.
A fossil of a type of organism that lived many places during a relatively short time span.
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