Limestone is made of calcium carbonate, caco3. would you use an acid or a base to test a rock sample to determine whether it contains calcium carbonate?

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

How does an angiosperm prevent self pollination

What is used to keep track of the gamates and possible offsprings combination