I created a water filter that I thought could cleanse dirty water.
I put the cotton balls at the bottom of the bottle so that they could catch any remaining dirt.
I put the sand in the midle to catch all the bacteria flowwing through the dirt or the dirt carried and is now in the sand.
I put the rocks at the top to stop the dirt going through the top because it could posibly get through the sand and most definitly the dirt could go through the cotton balls.
I did a prediction on what I thought would happen when dirty water would come through or water with dirt or just water you can’t drink (you can drink dirty water but it would taste horrendous and who would consume dirty water).
I enjoyed putting the rocks, sand and cotton balls in there place. I need to inprove on predicting. I did well at putting all the things to cleanse the water in their places.