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The Paleozoic, Mesozoic, and Cenozoic Eras
Chapter 23 Review The Paleozoic, Mesozoic, and Cenozoic Eras
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When there is no tectonic activity along the edge of a continent, the edge is referred to as a ____.
coastline passive margin transgression regression
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During the ____, all but one of the major marine phyla appeared.
Cambrian explosion Antler Orogeny Caledonian Orogeny Ouachita Orogeny
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The series of transgressions and regressions that produce cyclothems were likely produced by ____.
tectonic collisions volcanic activity mass extinctions glaciation
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As North America rifted from Europe and Africa, a continuous rift system called the ____ was formed.
Gulf of Mexico Cordillera Mid-Atlantic Ridge East African Rift Valley
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The southernmost point to which glaciers advanced in North America is marked by the path(s) of the ____. Ohio River and the Missouri River Missouri River Ohio River and the Mississippi River Mississippi River
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In order to categorize a margin as active or passive, you must have information about________.
the permeability of the margin rocks the amount of tectonic activity along the margin the depth of water that covers the margin the rate of glacial movement along the margin
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Which line on the graph shows the sea level change that would result in continuous shoreline regression? A B C D
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Seed plants that lived during the Carboniferous impact life on Earth today because________.
they are the ancestors of all plant life on Earth their remains formed coal, which is an important resource they produced fossils that are used to date many geologic events their presence caused oxygen levels to drop, allowing animals to evolve
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A rapid appearance of many new species of organism’s usually
happens just before an extinction event leads to an increase in glaciation is directly related to a drop in sea level happens after a mass extinction
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This graph best represents the populations of marine groups before and after the
Cambrian explosion Ordovician extinction Permo-Triassic Extinction Event Alleghenian Orogeny
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If two continents of equal size were to collide and become one, how would the total area of continental shelf space associated with the landmass change? it would be unchanged it would triple in would decrease in would double
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Which point on the timeline best indicates the time when birds first appeared?
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The extinction event shown on the time line was
devastating to all land animals the most severe extinction event in Earth’s history mild compared to other extinction events most likely caused by widespread disease
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The shaded are of this graph could be used to represent
the portion of Earth’s land covered with ice at the peak of the Cenozoic ice ages the portion of Earth’s land that was a part of Pangaea the portion of Earth’s history during which humans have existed the portion of Earth’s history during which tectonic forces acted on Earth’s surface
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Series of islands that divided Laurentia in half from north to south
amniote egg Transcontinental Arch Caledonian Orogeny Gondwana mass extinction Ouachita Orogeny horsetail reduction in continental shelf regression
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Movement of a shoreline seaward
amniote egg Antler Orogeny Caledonian Orogeny Gondwana mass extinction Ouachita Orogeny horsetail reduction in continental shelf regression
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Movement of a shoreline inland
amniote egg Antler Orogeny Caledonian Orogeny Gondwana mass extinction Ouachita Orogeny horsetail transgression regression
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The dying out of an unusually large number of species over a relatively short period
mass extinction Antler Orogeny Caledonian Orogeny Gondwana Transcontinental Arch Ouachita Orogeny horsetail reduction in continental shelf regression
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Large Paleozoic continent in the southern hemisphere
amniote egg Antler Orogeny Caledonian Orogeny Transcontinental Arch Gondwana Ouachita Orogeny horsetail reduction in continental shelf regression
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Collisional event that joined Gondwana and Laurasia
amniote egg Antler Orogeny Caledonian Orogeny Gondwana mass extinction Ouachita Orogeny horsetail reduction in continental shelf regression
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Contains fluid and food, and protects embryo
Transcontinental Arch Antler Orogeny Caledonian Orogeny Gondwana mass extinction Ouachita Orogeny horsetail reduction in continental shelf amniote egg
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One possible cause of the Permo-Triassic Extinction Event
amniote egg Antler Orogeny Caledonian Orogeny Gondwana reduction in continental shelf Ouachita Orogeny horsetail Transcontinental Arch regression
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Ancient geographic setting of an area
Ancestral Rockies Burgess Shale cyclothem paleogeography passive margin Taconic Orogeny
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Continental edge with no tectonic activity
Ancestral Rockies Burgess Shale cyclothem paleogeography passive margin Taconic Orogeny
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Mountain-building event named for the mountains of eastern New York State
Ancestral Rockies Burgess Shale cyclothem paleogeography passive margin Taconic Orogeny
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Contains fossils of soft-bodied Cambrian organisms
Ancestral Rockies Burgess Shale cyclothem paleogeography passive margin Taconic Orogeny
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Repeating pattern of sedimentary sequences stacked on top of each other
Ancestral Rockies Burgess Shale cyclothem paleogeography passive margin Taconic Orogeny
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Mountain range in present-day Colorado formed by inland uplift
Ancestral Rockies Burgess Shale cyclothem paleogeography passive margin Taconic Orogeny
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Evaporite rocks are more permeable than reef rocks.
True False
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Sea level increases when the number and size of glaciers on Earth increase.
True False
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The Cambrian explosion refers to a rapid increase in volcanic activity.
True False
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Rate of subduction is one factor that distinguishes the three phases of the Cordilleran Orogeny.
True False
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Reptiles can reproduce on land, while amphibians need water to reproduce.
True False
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The Permo-Triassic extinction event had a greater impact on the number of Earth’s species than did the extinction event at the end of the Cretaceous. True False
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The tectonic forces that shaped Earth’s continents no longer have any impact on Earth’s features.
True False
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Dinosaurs’ skeletons can be distinguished from those of other reptiles by the structure of the hips and legs. True False
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Rock tossed into the atmosphere by a meteorite impact can cause greenhouse warming.
True False
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This timeline correctly shows the order of time periods in the Mesozoic Era.
True False
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At the beginning of the Paleozoic, the North American continent of Laurentia was located near the Arctic Circle and was surrounded by ocean. True False
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During the Cambrian, Laurentia was completely surrounded by passive margins, thus, no mountain ranges were actively forming. True False
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Amniote eggs evolved in lobe-finned fishes, allowing them to overcome their dependence on water.
True False
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The Taconic Mountains of eastern New York resulted from the Antler Orogeny.
True False
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The largest insects that ever lived were preserved in the ideal environment of sandy beaches.
True False
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The Great Permian Reef Complex is the remains of a fossilized barrier reef.
True False
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When Pangaea broke apart, the western margin of North America was characterized by a(n) decrease in deformation. True False
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Volcanism returned to the western coast of North America at the end of the Eocene.
True False
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During the peak of Pleistocene glaciation, glaciers up to 10-km thick covered some areas of North America. True False
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Throughout the Early and Middle Triassic, before Pangaea split apart, this supercontinent and two oceans defined Earth’s paleogeography. True False
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The first mammals, birds, and flowering plants arose during the Cenozoic, which was a time of many biological firsts. True False
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As the climate cooled during the late Eocene, forests gave way to open land, which supported a diversity of large mammals. True False
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