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fossils
Question | Answer |
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mold | a fossil that formed when an organism pressed into mud, leaving a shape that hardened in rock |
evidence | information and facts that help prove something or make you believe that something is true |
index fossil | a fossil of a known age that is used to figure out the age of the rock around it |
imprint | a mark made by pressing or stamping something on the surface |
replace | to put one thing in place of another (a petrified fossil forms when the hard parts of an organism are replaced by minerals. The fossil looks like a bone or tree trunk, but is made of rock. |
fossil fuel | a fuel that formed from the decayed remains of ancient plants and animals (petroleum, gasoline, coal, natural gas). |
trace fossil | a footprint, track, or burrow made by an organism and preserved in rock. |
petrified fossil | a fossil that has formed when the hard parts of an organism were replaced by minerals. |
paleontolist | a geologist who specializes in fossils |
sediment | bits of rock, soil, sand, shells, and the remains of organisms |