1.

Adina is stranded on an island in the middle of the ocean. There is one stream on the island but the water has lots of sand in it. Which technique should she remove the sand from the water?

Answer»

She can REMOVE the sand , using a shovel , but that will be hard ..
EVENTUALLY the stream will CARRY off the silt and the sand . thus she doesn't have to do ANYTHING , but to wait ..



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