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A petrified fossil forms when
index
Thousands of species die out in a short time
The fossil found in the lower layer is older than the one found above it.
footprint
minerals replace all or part of an organism
Soft parts of plants are easily destroyed.
provides evidence of an animal\'s action
Cast fossil
A trace fossil:
index
Thousands of species die out in a short time
The fossil found in the lower layer is older than the one found above it.
footprint
minerals replace all or part of an organism
Soft parts of plants are easily destroyed.
provides evidence of an animal\'s action
Cast fossil
Which of the following is an example of a trace fossil?
index
Thousands of species die out in a short time
The fossil found in the lower layer is older than the one found above it.
footprint
minerals replace all or part of an organism
Soft parts of plants are easily destroyed.
provides evidence of an animal\'s action
Cast fossil
A(n) _________ fossil is a fossil that must be widely distributed and represent a type of organism that existed only briefly.
index
Thousands of species die out in a short time
The fossil found in the lower layer is older than the one found above it.
footprint
minerals replace all or part of an organism
Soft parts of plants are easily destroyed.
provides evidence of an animal\'s action
Cast fossil
Fossil formed when a mold is filled in with sediment.
index
Thousands of species die out in a short time
The fossil found in the lower layer is older than the one found above it.
footprint
minerals replace all or part of an organism
Soft parts of plants are easily destroyed.
provides evidence of an animal\'s action
Cast fossil
Mass extinction means....
index
Thousands of species die out in a short time
The fossil found in the lower layer is older than the one found above it.
footprint
minerals replace all or part of an organism
Soft parts of plants are easily destroyed.
provides evidence of an animal\'s action
Cast fossil
On a geological dig, two fossil samples were found in different rock layers in the same area. One fossil was found in a rock layer that was located below the other.Which can be concluded about the relative ages of the fossils?
index
Thousands of species die out in a short time
The fossil found in the lower layer is older than the one found above it.
footprint
minerals replace all or part of an organism
Soft parts of plants are easily destroyed.
provides evidence of an animal\'s action
Cast fossil
Why are plant fossils not as common as animal fossils?
index
Thousands of species die out in a short time
The fossil found in the lower layer is older than the one found above it.
footprint
minerals replace all or part of an organism
Soft parts of plants are easily destroyed.
provides evidence of an animal\'s action
Cast fossil
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