Quiz 8 Geol
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| Which of the following gases was NOT part of Earth's original atmosphere? | show 🗑
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| The most common Precambrian fossils are ________, layered mounds of calcium carbonate. | show 🗑
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| show | Cenozoic
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| ________ are among the most widespread Paleozoic fossils | show 🗑
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| As the solar system began forming, the first materials to condense into small particles were ________ and nickel. ? oxygen - silicon - nitrogen - carbon ? | show 🗑
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| show | Precambrian
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| show | Gondwanaland
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| Which type of bacteria thrive in environments that lack free oxygen | show 🗑
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| Which era of geologic time spans about 88 percent of Earth's history | show 🗑
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| show | protosun
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| Mammals became the dominant land animals during the ________ era | show 🗑
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| The ________ period was a time of major extinctions, including 75 percent of amphibian families. | show 🗑
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| The beginning of the Cambrian period marks an important event in animal evolution — the appearance of organisms with _______ | show 🗑
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| The era of "ancient life" is the ________ era. ? Cenozoic - Precambian - Neolithic - Mesozoic ? | show 🗑
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| show | Precambian
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| show | green plants
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| The age of Earth is about ________. | show 🗑
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| The Precambrian rock record indicates that much of Earth's first free oxygen combined with ________ dissolved in water. | show 🗑
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| Which one of the following does NOT characterize the early development and specialization of the primitive mammals | show 🗑
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| show | Mercury and Earth
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| show | 540 million years ago
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| During the late Paleozoic, the present-day North America, Europe, western Asia, Siberia, and perhaps China formed the northern continent of ________. | show 🗑
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| show | Precambrian
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| show | Cambrian
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| show | protoplanet
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| The process in which plants use light energy to synthesize food sugars from carbon dioxide is called ________. | show 🗑
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| The beginning of the ________ era is marked by the appearance of the first life forms with hard parts. | show 🗑
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| show | shields
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| show | Pangea
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| Earth's primitive atmosphere evolved from gases ________. | show 🗑
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| The most economically important resource in Cenozoic strata of the Gulf Coast is _______ | show 🗑
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| The waste gas released by plants as they synthesize food sugars from carbon dioxide and water is ______ | show 🗑
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| show | Precambrian
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| The first true terrestrial animals were the _______ | show 🗑
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| show | Precambrian
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| show | Silurian
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| The supercontinent of Pangaea began to break up during the ________ era. | show 🗑
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| show | Mesozoic
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| show | Mesozoic
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| show | Pennsylvanian
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| show | birds
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| Which period is known as the "age of fishes"? | show 🗑
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| During the Cenozoic, plate interactions gave rise to many events of mountain building, volcanism, and earthquakes in ________ North America | show 🗑
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| The cells of these primitive organisms lack organized nuclei and they reproduce asexually. | show 🗑
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| Following the reptilian extinctions at the close of the Mesozoic, two groups of mammals, the marsupials and ________, evolved. | show 🗑
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| Cambrian - Mississippian - Jurassic - Devonian | show 🗑
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| show | dinosaurs
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| show | Phanerozoic
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| The decay of radioactive atoms, coupled with heat released by colliding particles, produced at least some melting of Earth's early interior. | show 🗑
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| We are now living in the Mesozoic era. | show 🗑
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| show | F
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| show | F
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| Due to differentiation, the lighter, gaseous materials escaped Earth's interior and became the primitive atmosphere. | show 🗑
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| show | F
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| show | T
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| show | F
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| show | F
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| The Cenozoic era is the age of mammals. | show 🗑
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| The major source of oxygen in Earth's atmosphere is from the decay of plants | show 🗑
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| show | F
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| Much of the original free oxygen in the atmosphere combined with iron dissolved in water to become iron oxide. | show 🗑
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| show | F
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| The large outer planets (Jupiter, Saturn, Uranus, and Neptune) contain huge amounts of hydrogen and other light materials as part of their composition. | show 🗑
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| Fossil fuels are abundant in Precambrian rocks. | show 🗑
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| show | T
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| The fault-block mountains of Nevada and Mexico formed during the Cenozoic era. | show 🗑
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| show | T
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| Volcanic activity was common in western North America during much of Cenozoic time. | show 🗑
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| The earliest land plants had large, broad leafs to efficiently intercept sunlight. | show 🗑
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| Mammals replaced reptiles as the dominant land animals in the Cenozoic era. | show 🗑
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| A wave of late Pleistocene extinctions rapidly eliminated many large mammals. | show 🗑
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| show | F
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| show | F
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| show | T
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Created by:
yphan