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Eutrophication 23.01.2010r.

In today's class we made the experience that was designed to observe various types of water, ie: distilled water, surface water and tap water. To experience was, we need 45 jars, phosphoric fertilizer and nitrogen fertilizer, and laboratory glassware. At the beginning we signed the appropriate symbols all the jars, and then computed and the weight of the odmierzaliśmy and the mass of water. We started with the solutions of 1%. At each position we needed nine jars. Then we prepared solutions of 5%, 15%, 20% and 50%. All jars zakryliśmy caps and put them in a safe, warm and sunny location. The control samples were married a few drops to the microscopic studies. Then, the glass core nanieśliśmy drops of water involved, then nakryliśmy coverglass and its shores have removed the excess water.
watched under a microscope prepared according to instructions test sample of water. Description of the changes occurring in the jars will be described in the next blog.
Classes were as usual, successful and interesting:).

The Replacements Haentai

DEVELOPS AN ISLAND-LAND EDU

The last class we created a preliminary draft of our island, which is called Edu-land.;)
Together, we have thought of population distribution, and recreational buildings, schools, medical centers, roads and other facilities needed for daily operations, positioning them with a view to mieszkańcach.Według we have created a good overview of our island. :) Classes were, as always, successful and funny.

In today's class