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A Journey Through Time

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Questions and Answers

Which type of changes does the fossil record show evidence of?

Extinction

Adaptation

Macroevolution (correct)

Microevolution

What is an example of a key adaptation mentioned in the text?

Burrowing in mammals

Flight in birds (correct)

Climbing in reptiles

Swimming in fish

What does the fossil record reveal?

The process of fossilization

The age of the Earth

The evolutionary history of life on Earth (correct)

The location of fossil sites

What type of rock layers are a rich source of fossils?

Sedimentary Signup and view all the answers

What does the fossil record indicate about the kinds of organisms on Earth?

Organisms have undergone great changes at different points in time Signup and view all the answers

What is the title of Figure 23.1?

Would You Have Expected to Find Whale Bones Buried Here Signup and view all the answers

What is the title of Figure 23.2?

Fossil of Dorudon Atrox, an Ancient Whale Signup and view all the answers

What is the copyright year in the text?

2021 Signup and view all the answers

What is the name of the ancient whale mentioned in the text?

Dorudon Atrox Signup and view all the answers

What is the main focus of Concept 23.1?

The fossil record documenting life's history Signup and view all the answers

Which method can be used to determine the relative ages of fossils?

Sequence in the rock strata Signup and view all the answers

What is the purpose of radiometric dating?

To confirm the absolute ages of fossils Signup and view all the answers

What is the half-life of an isotope?

The time required for half the parent isotope to decay Signup and view all the answers

What is the maximum age that can be measured using C14/C12?

75,000 years Signup and view all the answers

What is the geologic record?

A standard time scale for Earth's history Signup and view all the answers

Which eon is the most recent in Earth's history?

Phanerozoic Eon Signup and view all the answers

Which eon is the oldest in Earth's history?

Hadean Eon Signup and view all the answers

What is the name of the eon that comes after the Proterozoic Eon?