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Measurements of the extent of amino-acid decomposition in

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VP
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Measurements of the extent of amino-acid decomposition in [#permalink] New post 03 Oct 2004, 17:16
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Measurements of the extent of amino-acid decomposition in fragments of eggshell found at archaeological sites in such places as southern Africa can be used to obtain accurate dates for sites up to 200,000 years old. Because the decomposition is slower in cool climates, the technique can be used to obtain accurate dates for sites almost a million years old in cooler regions.

The information above provides the most support for which one of the following conclusions?

(A) The oldest archaeological sites are not in southern Africa, but rather in cooler regions of the world.

(B) The amino-acid decomposition that enables eggshells to be used in dating does not take place in other organic matter found at ancient archaeological sites.

(C) If the site being dated had been subject to large unsuspected climatic fluctuations during the time the eggshell has been at the site, application of the technique is less likely to yield accurate results.

(D) After 200,000 ears in a cool climate, less than one-fifth of the amino acids in a fragment of eggshell that would provide material for dating with the technique will have decomposed and will thus no longer be suitable for examination by the technique.

(E) Fragments of eggshell are more likely to be found at ancient archaeological sites in warm regions of the world than at such sites in cooler regions.
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 [#permalink] New post 03 Oct 2004, 20:34
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 [#permalink] New post 04 Oct 2004, 03:27
Amazing that yu remember anything discussed earlier :)
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VP
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 [#permalink] New post 04 Oct 2004, 08:58
Sorry, :cry:

Could you explain why choice D weaken?

thank you.
  [#permalink] 04 Oct 2004, 08:58
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