Compare and contrast various methods of toothbrushing

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

Match with o for organic and i for inorganic for each compound

What noticeable trend from this graph might be used to make a conclusion?