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9 questions
Which of the following is an example of a body fossil?
A perfect mold of a dinosaur bone
A carbon print left by a leaf
A skull of a mammoth that fell into a tar put
A dinosaur footprint
Which of the following is an example of a trace fossil?
A skeleton preserved in a tar pit
A footprint of an extinct animal
A mummy buried in ice
An insect preserved in amber
Why are deserts, tar pits, & ice good places to find a body fossil?
Most ancient organisms lived in these environments
Bacteria & other decomposers cannot thrive in these environments
Many ancient organisms traveled to these places to die
The largest ancient organisms lived in these environments
In order to form a fossil, an organism must usually ______ quickly after it dies.
Decompose
Go extinct
Rot
Be buried
What can you conclude from the fact that so many fossils involve shells, skeletons, and teeth?
Most organisms on earth have shells, skeletons, or teeth.
Bacteria and decomposers consume these parts first after an animal dies.
These parts decay slower than other body parts.
These parts are more likely to be buried in ice than other body parts.
Although a cast fossil looks like an original bone or shell, how is it different?
It's made of rock.
It contains skin, hair, & other remnants.
It has been liquefied.
It is completely colorless.
A mold fossil is most similar to:
An eggshell with no egg inside.
A replica of your teeth made at the dentist's office.
A bone your dog buries in your backyard.
An insect trapped in tree sap.
What can you infer from the fact that fossil fuels are carbon-based?
Over time, flesh turns into carbon.
Most life on earth is made from carbon.
Trees are made from carbon, but animals are not.
Swampy environments are carbon-poor environments.
What two forces can turn fossils into fossil fuels?
Lift & thrust
Wind & rain
Temperature & pressure
Motion & time
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