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One similarity between Carbon-14 and Uranium 238 is that both
The processes in the rock cycle were the same in the past as they are today
It allows us to time-sequence fossils
The position of the layer compared to other layers
Uranium-238
Carbon-14
on the bottom
decay at a predictable rate
Most life-forms that existed on Earth have become extinct.
In an undisturbed rock profile, the oldest rocks are found
The processes in the rock cycle were the same in the past as they are today
It allows us to time-sequence fossils
The position of the layer compared to other layers
Uranium-238
Carbon-14
on the bottom
decay at a predictable rate
Most life-forms that existed on Earth have become extinct.
Why is the "Law of Superposition" critical to the study of fossil life forms?
The processes in the rock cycle were the same in the past as they are today
It allows us to time-sequence fossils
The position of the layer compared to other layers
Uranium-238
Carbon-14
on the bottom
decay at a predictable rate
Most life-forms that existed on Earth have become extinct.
Which of these is the best indication of the relative age of a rock layer?
The processes in the rock cycle were the same in the past as they are today
It allows us to time-sequence fossils
The position of the layer compared to other layers
Uranium-238
Carbon-14
on the bottom
decay at a predictable rate
Most life-forms that existed on Earth have become extinct.
Which radioactive isotope would be used to determine the age of a wooly mammoth found in Pleistocene sediments?
The processes in the rock cycle were the same in the past as they are today
It allows us to time-sequence fossils
The position of the layer compared to other layers
Uranium-238
Carbon-14
on the bottom
decay at a predictable rate
Most life-forms that existed on Earth have become extinct.
Which statement can best be supported by the fossil record?
The processes in the rock cycle were the same in the past as they are today
It allows us to time-sequence fossils
The position of the layer compared to other layers
Uranium-238
Carbon-14
on the bottom
decay at a predictable rate
Most life-forms that existed on Earth have become extinct.
Rock layers tell a story about their past. What is the basic assumption that is made when reading the story?
The processes in the rock cycle were the same in the past as they are today
It allows us to time-sequence fossils
The position of the layer compared to other layers
Uranium-238
Carbon-14
on the bottom
decay at a predictable rate
Most life-forms that existed on Earth have become extinct.
Which radioactive substance has the longest half-life?
The processes in the rock cycle were the same in the past as they are today
It allows us to time-sequence fossils
The position of the layer compared to other layers
Uranium-238
Carbon-14
on the bottom
decay at a predictable rate
Most life-forms that existed on Earth have become extinct.
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