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Vocabulary Chapter 20
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1.
CHAPTER 20 VOCAB
BY ANNALISE HERNANDEZ
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popofatticus
2.
HALF-LIFE
Definition: The time required for half of the radioactive adams in a sample to decay.
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Noah Boyer
3.
EXTINCT
Definition: Having no living members
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paloetic
4.
RELATIVE DATING
Definition: The science of determining The relative order of past events without necessarily determining their absolute age
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jurvetson
5.
RADIOMETRIC DATING
Definition: A method of dating geological specimens by determining The relative proportions of particular radioactive isotopes.
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Abdulaziz Alfawzan
6.
GEOLOGICAL TIME SCALE
Definition: A timeline of earths history
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The New York Public Library
7.
ERAS
Definition: A long distant period of history with a particular feature or characteristic
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Jossuha Théophile
8.
PERIOD
Definition: a length of portion of time
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Alan Cleaver
9.
PLATE TECTONICS
Definition: The interaction of rigid lithospheric plates which move slowly the underlying mantle
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Nomad China
10.
MACROEVOLUTIONARY PATTERNS
Definition: major transformation in anatomy, phylogeny, ecology, and behavior, which usually takes place in larger clades.
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Randy Son Of Robert
11.
BACKGROUND EXTINCTION
Definition: species become extinct when they fail to adapt to competition and changing environment
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Jesse Schoff
12.
MASS EXTINCTION
Definition: When something drastic happens and effects species on a global scale
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Christopher Burns
13.
GRADUALISM
Definition: evolution
Definition: gradual reformatted and some change
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Ian Britton
14.
PUNCTUATED EQUILIBRIUM
Definition: when equilibrium is interrupted by small period of geological rapid change
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Virtual Manuscript Library of Switzerland
15.
ADAPTIVE RADIATION
Definition: Process where a single species evolve into several different species
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Boston Public Library
16.
CONVERGENT EVOLUTION
Definition: the appearance of similar characteristics of unrelated organisms
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James St. John
17.
COEVOLUTION
Definition: process by which two species evolve in response to changes in each other every time
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Harlequeen
18.
ENDOSYMBIOTIC THEORY
Definition: Proposes that organelles were formed when different types of cells joined in a kind of merger
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kaibara87
Annalise Hernandez
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