Will mark brainliest! which of the following is a physical change? adding acid to milk to form sour cream adding enzymes to milk to form cheese adding bacteria to heated milk to form yogurt adding sugar to milk to form sweetened milk

Check all that apply diatoms are marine algae that have a shell made of silica, what are some of the uses of the silica shell after the diatoms die? 1.the shells make up the diatomaceous earth used in filters 2.it can be used as an ingredient in abrasives 3.they are used in food products 4.the shells can be used in some insulating materials