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Crucigrama Sopa de Letras Hoja de Trabajo
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Horizontales
The study of trace fossils.
An organism that breaks down the tissue and/or structures of dead organisms.
Living at the bottom of the ocean floor.
Containing carbon.
An organism that feeds upon dead organisms.
Fossils formed when an organism is flattened and a thin film of organic material from its body is left in rock.
Verticales
Weathering or wearing away of rock and earth caused by wind, sun, and/or water.
Fossilized feces.
Not containing carbon.
The natural remains or traces of past life.