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❌ are preserved remains or traces of living things.
Which one of these is NOT a step in how fossils form?
form when living things die and are buried by sediments
sediments sit on top of rock until years pass
sediment slowly hardens into rock and preserves the shape of the organism
soft part decays and the hard part (bones, teeth) remains
Why are fossils found in sedimentary rock?
Fossils form in layers that bury remains
Heat needed for igneous/metamorphic rock would destroy fossils
Sedimentary rocks take longer to form
Cats love fossils in sedimentary rock
Petrified fossils Molds Casts Carbonaceous films( Petrified fossils, Molds, Casts, Carbonaceous films ) happen when spaces inside organism are filled w/ minerals from groundwater.
Petrified fossil Mold Cast Carbonaceous film( Petrified fossil, Mold, Cast, Carbonaceous film ) is an extremely thin coating of carbon on rock. It is left when gases/liquids given off by body and form an image.
Petrified fossils Molds Casts Carbonaceous film( Petrified fossils, Molds, Casts, Carbonaceous film ) are a copy of the shape of the organism. They're formed when the minerals or sediment fill in space.
Petrified fossils Molds Casts Carbonaceous films( Petrified fossils, Molds, Casts, Carbonaceous films ) are hollow areas or cavities in sediment in the shape of an organism. They're formed when hard parts decays
Which one of these does trace fossils NOT provide evidence of?
animal size
speed
behavior
weight
Original remains occur if trapped in ______, ______, or _____.
tar
rock
stone
amber
ice
We can use fossils to........
tell about where the organism lived
tell why the organism existed
tell how the organism got its food
tell who the organism loved
Index fossils are common for a short period of time.
Check all that are an example of an index fossil.
ammonite
mannobite
hadrobite
trillobite
