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Evolution of Populations

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ANCIENT LIFE FORMING FOSSILS

GEOLOGIC TIME SCALE

EARTH FORMATION

GRAB BAG

Final Jeopardy

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©Norman Herr, 2003

QuestionAnswer

Ancient Life-100

• ANSWER: Scientists who study fossils.• QUESTION: What are paleontologists?

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Ancient Life-200

• ANSWER: Provides evidence about the history of life on earth

• QUESTION: What is the fossil record?

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Ancient Life-300

• ANSWER: Over 99% of these have become extinct.

• QUESTION: What are species living on the earth?

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Ancient Life-400

• ANSWER: They show how different groups of organisms have changed over time.

• QUESTION: What is the fossil record?

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Ancient Life-500

• ANSWER: Over billions of years, ancient unicellular organisms have given rise to these modern unicellular organisms that do not have their DNA within a nucleus.

• QUESTION: What are modern bacteria?

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• ANSWER: Most fossils form in this type of rock.

• QUESTION: What is sedimentary rock?

Forming Fossils-100

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Forming Fossils -200

• ANSWER: Dead organisms are buried by this prior to becoming a fossil.

• QUESTION: What is sediment?

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Forming Fossils -300

• ANSWER: The length of time required for half the radioactive atoms in a sample to decay, or become another isotope of the element.

• QUESTION: What is radioactive dating?

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Forming Fossils -400

• ANSWER: A species that is easily recognized, existed for a short period, and had wide distribution.

• QUESTION: What is an index fossil?

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Forming Fossils -500

• ANSWER: The age of a fossil is determined by comparing its placement to placement with fossils in other layers of rock.

• QUESTION: What is relative dating?

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Geologic Time Scale-100

• ANSWER: Paleontologist use divisions of this to represent evolutionary time.

• QUESTION: What is the geologic time scale?

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Geologic Time Scale -200

• ANSWER: After Precambrian Time, these are the basic general divisions of the geologic time scale.

• QUESTION: What are eras and periods?

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Geologic Time Scale -300

• ANSWER: The three eras between the Precambrian and the present.

• QUESTION: What are the Paleozoic, Mesozoic, and Cenozoic Eras?

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Geologic Time Scale -400

• ANSWER: The era in which dinosaurs lived and in which mammals began to evolve.

• QUESTION: What is the Mesozoic Era?

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Geologic Time Scale -500

• ANSWER: The era in which mammals became very common.

• QUESTION: What is the Cenozoic (or present) Era?

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Earth Formation-100

• ANSWER: Hydrogen cyanide, carbon dioxide, carbon monoxide, nitrogen, hydrogen sulfide, and water.

• QUESTION: What is earth’s early atmosphere?

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Earth Formation -200

• ANSWER: 3.8 billion years ago, oceans covered much of the earth, and this was first deposited in the water.

• QUESTION: What is sedimentary rock?

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Earth Formation -300

• ANSWER: They performed experiments to determine how organic molecules first formed.

• QUESTION: Who are Urey and Miller?

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Earth Formation -400

• ANSWER: Large organic molecules form tiny bubbles which have some characteristics of living organisms.

• QUESTION: What are proteinoid microspheres?

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Earth Formation -500

• ANSWER: Some of these molecules can grow and duplicate themselves, which surprised scientists. Scientists believe this came before DNA.

• QUESTION: What is RNA?

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Grab Bag-100

• ANSWER: Long stable periods of evolution, interrupted by brief periods of rapid change.

• QUESTION: What is punctuated equilibrium?

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Grab Bag -200

• ANSWER: A single species, through natural selection, evolves into different forms that live in different ways.

• QUESTION: What is adaptive radiation?

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Grab Bag -300

• ANSWER: Unrelated organisms evolve and begin to resemble one another.

• QUESTION: What is convergent evolution?

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Grab Bag -400

• ANSWER: Two species evolve in response to changes in each other over time.

• QUESTION: What is coevolution?

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Grab Bag 500

• ANSWER: The theory in which eukaryotic cells formed from symbiosis among several different prokaryotic organisms.

• QUESTION: What is the Endosymbiotic Theory?

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FINAL JEOPARDY

• ANSWER: Georges Cuvier

• QUESTION: Who was the main founder of both comparative anatomy and paleontology?