Soil Testing

Froggy and her friend, M decided to compare the soils in their gardens. 
These contraptions simulate the rainfall while catching the runoff. 

The shorter container is from Froggy's garden with potting soil while the taller container is from M's backyard where she uses plain dirt. You can see how much more erosion there was from the potting soil. Froggy finally understood why we have to keep refilling the pots.

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