Can an organ system function correctly when one of its organs does not

What came first egg or chicken? and is tomato a vegetable or a fruit?

What is the difference between bacterial infections and viral infections?

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