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Debora [2.8K]
3 years ago
15

How do scientist use index fossils

Biology
2 answers:
MissTica3 years ago
4 0

Answer:  Fossils are used to determine the ages of rock layers. Index fossils are of organisms that lived over a wide area.

Yanka [14]3 years ago
4 0

Answer:

Fossils are used to determine the ages of rock layers. ... Index fossils are of organisms that lived over a wide area. They lived for a fairly short period of time. An index fossil allows a scientist to determine the age of the rock it is in. I really hope this helps.

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7 0
3 years ago
Please help thank you
Svetach [21]
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3 years ago
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alina1380 [7]

Answer:

Point mutations are a broad category of mutations that describe a change in a single nucleotide of DNA, such as a substitution for another nucleotide, deletion of a nucleotide, or insertion of a single nucleotide into the DNA, resulting in DNA that differs from the normal or wild type gene...

or you can say:

Point mutations are a large category of mutations that describe a change in single nucleotide of DNA, such that that nucleotide is switched for another nucleotide, or that nucleotide is deleted, or a single nucleotide is inserted into the DNA that causes that DNA to be different from the normal or wild type gene ...

8 0
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Part of the subcortex responsible for coordination is called the
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ipn [44]

Answer: False

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