CHILLY START

introduction

• They say that ice once had covered the entire earth.
• The ice helped the molecules to stay safe and keep them working consistenl 
• The sun was apparently not bright enough to melt the ice. 
• So the molecules would then create the world as it is now 
• And as the world would change the sun would soon be hotter and melt the ice

Ice might have covered the oceans 3 billion years ago. This layer of ice possibly protected some fragile organic compounds in the water.

Instead of super-hot, hydrothermal vents, some believe life began inside hundreds of feet of ice that supposedly covered the early oceans.

Could life begin on ice?

• If life originated on ice then there is more 
• Possibilities that life is on places colder 
• than our planet.
• It is different than the other theories because
• they thought life was needed for warm and hot climates

Could life beGIN on ice? continued

• Ice may have been a favorable environment to generate
• a precondition for life.
• RNA was present and was self- replicating.
• RNA could produce more and more of itself without 
• any help from another organic compound.                  

could life begin on ice? continued

• RNA molecules fall apart very easily in warm conditions outside of cells
• If they freeze it speeds up the replication of RNA
• The RNA long chains which create enzymes are chemical compounds
• that do important jobs in chemical reactions like icreasing the 
• product and speeding them up.

does ice slow down or speed up?

• Chemical reactions slow down as the temperature gos down.
• But some reactions could also speed it up
• This process is then called eutectic freezing 
• In doing so, ice crystal formed and helped it stay pure
• "Only molecules of water join the growing crystal, while others are exclude

conclusion

• Ice had once covered the whole Earth
• The world changed and it was then hot enough to melt the ice.
• If life was on ice then there was a lot more chances that life 
• could be on places colder than our planet.
• The ticket that made life possible was the unusual properties of frozen H2O

WORKS CITED

• www.world-science.net
• www.scienceguy288didlifebegininlice?
• http://discovermagazine.com/2008/feb/did-life-evolve-in-ice#.Ut9dh3l6ju0
• http://wiki.riverside.qld.edu.au/users/005016/weblog/52122/