ch.18&19 test Flashcards by Lauren Alvarez | Brainscape

Q

how old is earth

A

4.6 billion years

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Q

what do fossils show

A

structure, environment, and lifestyle of an organism

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Q

sedimentary rock

A

what most fossils are found in

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Q

index fossils

A

common fossils that determine rock

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Q

relative dating

A

deeper the fossil, the older it is

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Q

radiometric dating

A

use of isotopes

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Q

what did linnaeus do

A

come up w the classification system

binomial nomenclature

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Q

taxa

A

each level of classification

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Q

three domains

A

bacteria
archaea
eukarya

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Q

what does eukarya consist of

A

protists, plants, fungi, and animals

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Q

phylogenetic

A

evolutionary relationships

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Q

node

A

shows common ancestors

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