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Index
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Flash cards
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Chapter 1
»
Level 1
level: Level 1
Questions and Answers List
level questions: Level 1
Question
Answer
An animal without a backbone.
Invertebrate
A record of the life forms and geologic events in Earth’s history.
Geologic time scale
A major division of geological time, subdivided into eras.
Eon
A major division of geological time that is a subdivision of an eon and is itself subdivided into periods.
Era
A division of geological time that is a subdivision of an era.
Period
An animal without a backbone.
Invertebrate
An animal with a backbone.
Vertebrate
A super continent that included most land on Earth and existed during the late Paleozoic and early Mesozoic.
Pangea