It's all because of bilirubin in the bile.
Bilirubin is formed from hemoglobin , after the latter is produced from the red blood cells in the process of decay , it is part of the normal process of replacement of some other cells . Released hemoglobin changes in chemical composition and removed from the body by the liver .
In such modified hemoglobin liver (bilirubin ) joins other chemicals and is produced as secretion from liver as bile.
Depending on the concentration of bilirubin , bile may vary from dark to light yellow .
Bile passes through the bile ducts ( and gall bladder) and into the intestine . Once the bile into the intestine , some of its components are also subject to chemical change and affect the color of feces .
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By color , by the way , you can figure out how to operate some of the organs .
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OK, persuaded <! - ~ 7 ~ ->

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Read, educate. At the other art-forum may be useful to these knowledge <! - ~ 7 ~ ->

Syzransky, what are you ... <! - ~ 7 ~ -> Billy Rubin <! - ~ 7 ~ ->

And repeat (for KS) - [COLOR="navy
"]best teaching[/COLOR] (c).
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Kirill I'm here I spin like a snake in a skillet just not mention in this thread, and you all my efforts down the drain <! - ~ 7 ~ -> <! - ~ 7 ~ -> <! - ~ 7 ~ - ->

Well, what kind of tenderness ...
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And if Latin:

Naturalia non sunt turpia. (c) <! - ~ 7 ~ ->

Malevich sorry to read all this is not smozhet.Vot be surprised.
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Ay -ay, in popolyarnoy article written for housewives that bilirubin stains <! - ~ 7 ~ - > And he thinks the Bulls and Malgin about this? <! - ~ 7 ~ ->

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I think we should throw a link Bykov - he just reacts.

will be painted crimson month ,
And Billy Rubin turned yellow ...

Cyril, and you're talking about!
That's how she knew that one thread is bound to say, "in the Greek Hall in Greek hall ..."
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 Pablo, old boy Planck gave here is a definition of " color temperature " :

 " The color temperature is defined as the temperature of a black body heated to a state in which it emits the same color tone as the radiation considered ."

Consequently , old Planck assumed the presence of a "glowing object " . It would be wise to agree with him , no more stupid than the SW. Wasserman was a man .