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Measurements indicate that a fossilized skull unearthed by a paleontologist has a carbon-14/carbon-12 ratio about one-eights that of the skulls of present -day animals. What is the approximate age of the fossil? (The half-life of carbon -14 is 5,730 years

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Jamar Ferry
Jamar FerryLv2
28 Sep 2019

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shorter
longer
more robust
less robust

Australopithecus afarensis

all of these
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is found in southern and eastern Africa
is the largest well-studied collection of early hominins

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False
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all of the original amount will have decayed
half of the original amount will still be present
a quarter of the original amount will still be present
all of the original amount will still be present

Biostratigraphy is a type of relative dating technique.

True
False

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Carbon-14
flourine
potassium/argon
thermoluminescence

"John is two years older than Joe." This statement is an example of

a chronometric comparison
a theory
an absolute date
a relative date

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is still not complete
is best left to geologists
rarely replies on assigning taxonomic names to fossil material
does not require a chronological framework

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Ardipeithecus / East Africa
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Australopithecus / the Rift Valley
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