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Old 07-06-2003, 02:57 AM   #11
Lief Erikson
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Join Date: Dec 2000
Location: Fountain Valley, CA
Posts: 6,343
Quote:
Originally posted by Cirdan
As to the extgrodinary ages described in the bible, you must remember that there is a limit to the number of times our DNA can replicate, without being part of a stem cell, gamete, etc. Even adding extrodinary living conditions and allowing say a 50% increase in age (very generous) 350 years is still well outside all modern limits of age. So, Sheeana is right, this requires a significant genetic variation.
Actually, though 350 years is well outside of the modern limit, I don't think its primary source is the one you've mentioned. Allow me to read some quotes from my Chemistry book:
Quote:
Originally written in "Basics for Chemistry"
As ionizing radiation passes through matter, it interacts with molecules, creating ions and high-energy molecular fragments called free radicals. Free radicals are very reactive, and cause further chemical changes that are harmful to living cells.
Quote:
Large doses of radiation are fatal because they cause failure of the blood-forming system, the gastrointestinal system, and the central nervous system. Smaller doses have effects that may not be observed until years later, such as impaired fertility, shortened life span[italics added], or cancer.
Quote:
It is impossible to avoid exposure to radiation, because small amounts of radiation, called background radiation, are constantly present around us. High energy radiation from outer space, called cosmic rays, contribute to the background radiation. Background radiation is also produced by the naturally occurring radioisotopes in minerals and in the construction materials that contain these minerals. As shown in Table 17-4, background radiation is the major source of radiation exposure for most people.
Table 17-4 proceeds to show us that the Average dose rate (mrem/year) is 182. Of that 182, 102 comes primarily from cosmic rays and radioisotopes. Most of the remainder comes from modern medical instruments.

Now, let's look again at the different symptoms of long term radiation contact. Cancer, impaired fertility, and shortened life span.

Quote:
Originally written in the World Book
Cancer strikes people of all ages but especially middle-aged persons and the elderly.
So cancer vulnerability plainly could increase over the long run because of radioactivity. As is logical- it has effect over the short term.

I don't need a World Book quote to demonstrate that it is middle aged persons and the elderly that are less likely to successfully bear children- we all know it.

And shortened life span also is a symptom.


Is it not conceivable then, that by a dramatic change in the radiocarbon levels on the planet, ages might be greatly reduced from what they once were?



I'm going to miss this thread when, the day after tomorrow, I have to go back to school for a week and not post on Entmoot .
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