yes!my hypothesis is correct because when we took off the rubber stopper then put the 50 ml on the hole put the bucket under the 50 ml then move the 50 ml away and the water runoff from the sand and clay and rock and through the hole and put the materials away.
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Posted By Houa to Houa's Blog at 1/25/2008 11:04:00 AM
Friday, January 25, 2008
[Houa's Blog] Investigate 3
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1 Comment:
Did the soil that eroded come from the surface of the earth, or out the side because of groundwater escaping?
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