W..a..t..e..r...

Discussion of everything related to the Theory of Evolution.

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pankaaj
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W..a..t..e..r...

Post by pankaaj » Sat Feb 25, 2006 2:11 pm

Is there any substituent for water?
What if there was no water on the Earth?
Is evolution possible upto such an extent what we have now without water?

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Post by 2810712 » Sat Feb 25, 2006 4:54 pm

fluids with a definite range of concentrations of chemicals may be ok for devlopement of life... their OKality to sustain life also depends upon the other lifable substances available... we need some reactions to occur... dielectric const., fluidity, Heat capacities of the medium all play part here along with its chem. properties...
Liquid state sem to be the in a good equilibrium so as to sustain in general... solids? i think very less chances...
air... i wonder if captured air can have... oh life forms having long big molecules [ may be of any appropriate elements] required for their existances will have high density and may thus develop on airshore resting on something less fluid...as life developed on earth near seashores...but still the air may be a medium of communication bet.n molecules...and of course life if everything works.


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pankaaj
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Post by pankaaj » Sun Mar 05, 2006 12:38 pm

Modify fluids to fit in biological system!
Would they work?
Take it with a pintch of salt!

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Post by AstusAleator » Mon Mar 06, 2006 12:39 am

No. Water has so many different essential qualities that enable life to exist.

Hydrogen bonds
Specific heat (freezing and boiling temperatures, which are handily enough right in the range of earth's climate)
Polarity (light refraction, formation of hydrophyllic and hydrophobic molecules, etc)
pH and ion neutral
Exists in 3 states on earth: liquid, solid, and vapor/gas
What did the parasitic Candiru fish say when it finally found a host? - - "Urethra!!"

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Post by kiekyon » Wed Mar 22, 2006 2:16 am

if there is no water, try ammonia instead

http://www.daviddarling.info/encyclopedia/A/ammonialife.html

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Post by AstusAleator » Wed Mar 22, 2006 8:47 pm

Ammonia is incredibly basic. There is a reason we use it as a cleaning substance. It would break down macromolecules and denature them.

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