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3 years ago

6

What best describes index fossils

1 answer:

KonstantinChe [14]3 years ago

6 0

Answer:

Index fossil, any animal or plant preserved in the rock record of the Earth that is characteristic of a particular span of geologic time or environment. A useful index fossil must be distinctive or easily recognizable, abundant, and have a wide geographic distribution and a short range through time.

Step-by-step explanation:

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Step-by-step explanation:

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What is the completely factored form of t4 − 16?

Mashcka [7]

we know that

A difference of squares problem can be factored as follows:

$a^{2}-b^{2} =(a+b)(a-b)$

in this problem we have

$t^{4}-16$

Applying difference of squares

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the term

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substitute

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therefore

<u>the answer is</u>

$(t+2)(t-2)( t^{2}+4)$

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