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Which makes a good index fossil?
There was a desert habitat before a marine habitat that formed the rock layers in the column.
index fossil
The rocks are approximately the same age.
a fossil that lived during only one geologic time period
450-year-old sediments
carbon-14
radioactive dating
The fossil found in the lower layer is older than the one found above it.
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?
There was a desert habitat before a marine habitat that formed the rock layers in the column.
index fossil
The rocks are approximately the same age.
a fossil that lived during only one geologic time period
450-year-old sediments
carbon-14
radioactive dating
The fossil found in the lower layer is older than the one found above it.
A geologist found 600-year-old sediments below a particular rock layer. Which will the geologist most likely find above the rock layer?
There was a desert habitat before a marine habitat that formed the rock layers in the column.
index fossil
The rocks are approximately the same age.
a fossil that lived during only one geologic time period
450-year-old sediments
carbon-14
radioactive dating
The fossil found in the lower layer is older than the one found above it.
Which is the most accurate method used in determining the age of a fossil?
There was a desert habitat before a marine habitat that formed the rock layers in the column.
index fossil
The rocks are approximately the same age.
a fossil that lived during only one geologic time period
450-year-old sediments
carbon-14
radioactive dating
The fossil found in the lower layer is older than the one found above it.
A scientist finds an index fossil in layers of rock in both Africa and South America. What does this indicate about the ages of the rocks?
There was a desert habitat before a marine habitat that formed the rock layers in the column.
index fossil
The rocks are approximately the same age.
a fossil that lived during only one geologic time period
450-year-old sediments
carbon-14
radioactive dating
The fossil found in the lower layer is older than the one found above it.
Which isotope has been most often used to determine the age of fossils in the past 50,000 years?
There was a desert habitat before a marine habitat that formed the rock layers in the column.
index fossil
The rocks are approximately the same age.
a fossil that lived during only one geologic time period
450-year-old sediments
carbon-14
radioactive dating
The fossil found in the lower layer is older than the one found above it.
Which best describes a fossil that helps determine the relative age of a rock layer?
There was a desert habitat before a marine habitat that formed the rock layers in the column.
index fossil
The rocks are approximately the same age.
a fossil that lived during only one geologic time period
450-year-old sediments
carbon-14
radioactive dating
The fossil found in the lower layer is older than the one found above it.
An undisturbed rock column contains a fossil of a reptile species in the lowest rock layer, an index fossil that was present 1 million years ago in the middle rock layer, and a fossil of a clam species in the top rock layer. Which statement is most l
There was a desert habitat before a marine habitat that formed the rock layers in the column.
index fossil
The rocks are approximately the same age.
a fossil that lived during only one geologic time period
450-year-old sediments
carbon-14
radioactive dating
The fossil found in the lower layer is older than the one found above it.
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