[TML] Alien ecologies

[Garry Ward]

----- Original Message ----- 
From: "Bruce Johnson" <johnson at pharmacy.arizona.edu>
To: "The Traveller Mailing List" <tml at travellercentral.com>
Sent: Wednesday, August 20, 2008 1:34 PM
Subject: Re: [TML] Alien ecologies


>
> On Aug 20, 2008, at 10:32 AM, Knapp wrote:
>
>>> Also, what minierals have a purple hue?  Amethyst?  Can that be
>>> broken down and used by living creatures?
>>
>> Ever eat seaweed? It is sometimes purple. Also there are purple velvet
>> plants and purple carrots (green top),
>>
>> Here is a nice one.
>> http://www.flickr.com/photos/suezq1342/2779597968/
>>
>> google for images: purple plants
>
> However the purple pigments in these plants do not play a role in
> photosynthesis.

Vaguely remember reading some where that with a non iron (or was it non 
carbon?) basis then the Photosynthesis agent would have a different color.

Garry
>
> -- 
> Bruce Johnson
> University of Arizona
> College of Pharmacy
> Information Technology Group
>
> Institutions do not have opinions, merely customs
>
>
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