Codee Koch, Mon. Oct 5,2009 3/3

What we did

• reviewed the Bio-20 Ecosystem Field Study Assingment
• reviewed and proceeded with the lab ''Examining water stratification''

My Thoughts

• After we finished the lab i found it very interesting that the salt water and fresh water cycled, but the warm and cold water did not.
• I found it even more interesting that because the salt water was more dense then the fresh water, that the salt water forced the fresh water up, there for cycling the mixture
• However I do question if there is an easier way of completeing this activity, because the removing of the laminated card from the two jars seemed to be somewhat difficult for some groups

Above and Beyond

• the photo below shows the layering of water and is a key element in the lab we did today
  

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  I would suggest knowing the terms in this photo along with  humus, litter, topsoil, subsoil, bedrock, biotic potential, and carrying capacity along with any others from chapter four (e.g limnetic zone, profundal zone, benthos, and latteral zone)