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1) Archeologists have found fossil remains of some of the first land
animals in layer C. It has been suggested that C-14 be used to data the fossils. Some archeologists have objected and suggested that it would be best to use U-238 or Pb-206 to date the rock layer instead. Why would they make such a suggestion?

A)
Rocks do not contain any elemental carbon for
radiometric dating purposes.
B)
Carbon-14 is only found in living things, it can only
be used to date remains.
C-14 has a very short half-Life, 5700 years, and based
on geologic history, layer C may be several million
years old.
C)
C-14 has such a long half-life, 570000 million years,
D) it would be more appropriate to use a radioactive
element with a shorter half-Life.

Sagot :

Answer:

C

Explanation:

carbon has a shorter half life

ShubhamchouhanvrVTidn

The half-life of carbon-14 is about 5,700 years and is too short to date rocks

What will be the life of the rock?

The half-life of a substance is the time taken for half of that substance to decay. The earth, and so the rocks on and in it, are very old.

Estimates place the earth to be 4-5 billion years old, which is why carbon-14 is unsuitable for the determination of the ages of rocks.

The original quantities of carbon-14 present in the rocks will deplete to exceptionally low levels, meaning they can not be detected accurately.

On the other hand, due to the longer half-life of uranium, measurable quantities will be present.

Thus the half-life of carbon-14 is about 5,700 years and is too short to date rocks.

To know more about Half-life follow  

https://brainly.com/question/2320811

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