Forum: Water (onion experiment)
Completion requirements
Put an onion into a glass of water. The water in the glass is tap-water. We compare in which school the roots of the onion are the longest. You can put more onions in different glasses in which the water is taken from different places and study them in your schools, but the tap-water-onions are the ones we compare all together. The results should be put in the Explorarium till the end of April (there will be a table for the results). The school whose onion-roots are the shortest should write a letter to the Mayor of the city, if possible…
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