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What is the BEST example of an unconformity?
It was the only species there
the oldest layer is on the bottom and the youngest layer is on the top
The climate of Alaska was warmer in the past than it is today.
missing layer of rock
Radioactive Dating
They correlate the existence of life on Earth with geological events.
examine fossils of plants and animals in different rock layers to see how these organisms have chang
The island drifted from a tropical region to its present location.
How would a biologist BEST determine the reason for extinction of a species?
It was the only species there
the oldest layer is on the bottom and the youngest layer is on the top
The climate of Alaska was warmer in the past than it is today.
missing layer of rock
Radioactive Dating
They correlate the existence of life on Earth with geological events.
examine fossils of plants and animals in different rock layers to see how these organisms have chang
The island drifted from a tropical region to its present location.
If you found many tracks of the same species of prehistoric animal in an area, what might you conclude about the animal?
It was the only species there
the oldest layer is on the bottom and the youngest layer is on the top
The climate of Alaska was warmer in the past than it is today.
missing layer of rock
Radioactive Dating
They correlate the existence of life on Earth with geological events.
examine fossils of plants and animals in different rock layers to see how these organisms have chang
The island drifted from a tropical region to its present location.
Scientists in Alaska discover fossils of several organisms that they know lived only in warm climates. What does this discovery tell them about the climate of Alaska in the past?
It was the only species there
the oldest layer is on the bottom and the youngest layer is on the top
The climate of Alaska was warmer in the past than it is today.
missing layer of rock
Radioactive Dating
They correlate the existence of life on Earth with geological events.
examine fossils of plants and animals in different rock layers to see how these organisms have chang
The island drifted from a tropical region to its present location.
The process by which the age of a rock is determined by measuring the amount of radioactive isotopes present in the rock or rock sample
It was the only species there
the oldest layer is on the bottom and the youngest layer is on the top
The climate of Alaska was warmer in the past than it is today.
missing layer of rock
Radioactive Dating
They correlate the existence of life on Earth with geological events.
examine fossils of plants and animals in different rock layers to see how these organisms have chang
The island drifted from a tropical region to its present location.
Which best explains how geologic time scales can help scientists study the evolution of life on Earth?
It was the only species there
the oldest layer is on the bottom and the youngest layer is on the top
The climate of Alaska was warmer in the past than it is today.
missing layer of rock
Radioactive Dating
They correlate the existence of life on Earth with geological events.
examine fossils of plants and animals in different rock layers to see how these organisms have chang
The island drifted from a tropical region to its present location.
In what way does the law of superposition show geological evolution?
It was the only species there
the oldest layer is on the bottom and the youngest layer is on the top
The climate of Alaska was warmer in the past than it is today.
missing layer of rock
Radioactive Dating
They correlate the existence of life on Earth with geological events.
examine fossils of plants and animals in different rock layers to see how these organisms have chang
The island drifted from a tropical region to its present location.
Fossils of warm-weather plants were found on an island in the Arctic Ocean. What can best be concluded from this discovery?
It was the only species there
the oldest layer is on the bottom and the youngest layer is on the top
The climate of Alaska was warmer in the past than it is today.
missing layer of rock
Radioactive Dating
They correlate the existence of life on Earth with geological events.
examine fossils of plants and animals in different rock layers to see how these organisms have chang
The island drifted from a tropical region to its present location.
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