Re: Beta-Carotene to Vitamin A

Space/Science » in reply to Beta-Carotene to Vitamin A

Neophyte — 2/27/2002 8:43:21 PM (archived)

Hmm...

How well does UV penetrate water at different wavelengths and depths?

Maybe therein lies an explanations why whales are not particularly sensitive to elevated UV levels perhaps because they spend most of their time under water. :-)

The whole thread (21 posts)

Vitamin D bonked the Dinasaurs - sunblok - 2/26/2002 6:36:08 PM
- NEWS FLASH: Conjugated Double Bonds and Cholesterol Degradation, Puts A Damper On Space Exploration - sunblok - 2/27/2002 7:28:19 PM
- K-T rats are done in by novel rodenticide QUINTOX-SOREXA. - sunblok - 2/27/2002 5:03:41 PM
  - Sorry....can't use HTML code in Subject field. - sunblok - 2/27/2002 6:43:35 PM
  - link for QUINTOX that I missed.a href="http://www.google.ca/search?q=Quintox+Bell+Labs&hl=en&meta="http://www.google.ca/search?q=Quintox+Bell+Labs&hl=en&meta=/a Hypercalcaemic poison Vitamin D-3 from… (n/t) - sunblok - 2/27/2002 6:41:12 PM
- I do know that certain reptiles have high sensitivity to Vit. A in certain forms. - ebnelson - 2/27/2002 4:02:57 PM
  - Beta-Carotene to Vitamin A - sunblok - 2/27/2002 7:02:23 PM
    - Re: Beta-Carotene to Vitamin A - Neophyte - 2/27/2002 8:43:21 PM
      - UV penetration of fresh water 3-4 meters most likely less for Ocean salt water. Whales survive TK time period but Dinasaurs are bowled out. - sunblok - 2/27/2002 2:16:11 PM
        
        There you go. :-) (n/t) - Neophyte - 2/27/2002 5:33:39 PM
        
        Addendum:Just searched CCNet under Ultra Violet and Gamma Rays. - sunblok - 2/27/2002 2:36:09 PM
  - Re: I do know that certain reptiles have high sensitivity to Vit. A in certain forms. - RobVG - 2/27/2002 4:54:11 PM
    - Re: B12 . . . - D. Spires - 2/27/2002 5:34:04 PM
      - Re: B12 . . . - RobVG - 2/27/2002 6:03:48 PM
- whales - p - 2/27/2002 1:23:50 PM
  - Re: A whale of a flash . . . - D. Spires - 2/27/2002 3:03:35 PM
    - Good Ref's D Spires, but it is a question of Dinasaur biochemistry and UV-climatic changes. eom - sunblok - 2/27/2002 4:28:14 PM
      - Re: The question is much larger than just that, encompassing many, many fields -- but we'll keep picking at it . . . (n/t) (n/t) - D. Spires - 2/28/2002 1:06:32 PM
  - Buffy the Bug Slayer - McFly - 2/27/2002 2:18:40 PM
  - Well, we threid, but the darn Greenpeace weenies decided to save the pollutin' monsters... - ebnelson - 2/27/2002 10:57:58 AM
    - Re: Save the whales campaign . . . - D. Spires - 2/27/2002 11:19:21 AM

Recent posts

On this day in Space/Science

The whole thread (21 posts)