jueves, 29 de mayo de 2008

Water pollution

Introduction:
Last tuesday we make a new experience that consist in watch how grow the seed with contaminated water.
Procedure:
Take 10 ml. of the polluting solution and put them in a 100 ml tes-tube.
Fill it with distilled water up to 100 ml.
Pour this solution into a mew Erlenmeyer labeled ''polluting 0.1''.
Take 10 ml of the ''polluting 0.1'' solution and put them in a 100 ml test-tube.
Fill the test-tube with distilled water up to 100 ml.
Pour this solution into a new Erlenmeyer labeled ''polluting 0.01''.
Take 10 ml of the ''polluting 0.01'' solution and put them into a 100 ml test-tube.

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