PABLO UBARRECHENA
JUAN ROTAECHE
ODEI FERNÁNDEZ
MARCOS FUENTES
Filtration
To do this experiment we need a bottle of two liters. Then we take some ingredients, like: sand and flowers.The best option to do this is: first take grass, second: we take some stones and then the water. The objective is put water mixed with sand and then the water fall down. But the water doesn’t have the sand.
