OBJECTIVE LIFE SCIENCE
DIVERSITY AMONG LIFE FORMS
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A paleontologist was developing a model of Earth’s time periods from fossils that were found in different rock layers. He found fossils of dinosaurs in one of the rock layers he was studying. During which time period did the animals whose fossils were found in this rock layer most likely live?
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Mesozoic Era
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Cenozoic Era
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PreCambrian Time
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Paleozoic Era
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Explanation:
Detailed explanation-1: -Fossil species that are used to distinguish one layer from another are called index fossils. Index fossils occur for a limited interval of time.
Detailed explanation-2: -(3) The kinds of fossils found in rocks of different ages differ because life on Earth has changed through time. Stratigraphic ranges and origins of some major groups of animals and plants.
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