1.) Fine flour and lumpy flour a.filtration b.sieving 2.) Brewing coffee a.filtration b.sieving 3.) Sand and water a.filtration b.sieving 4.) Sand and gravel a.filtration b.sieving 5.) Flour and small rocks a.filtration b.sieving 6.) Sand and palay a.filtration b.sieving 7.) Muddy water a.filtration b.sieving 8.) Tea mixture a.filtration b.sieving 9.) Stone and sugar a.filtration b.sieving 10.) Milk from grated coconut a.filtration b.sieving