Lymph fluid is the intermediary between the blood in the capillaries and the

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

The variation among individuals, on which natural selection acts

How does the structure of dna hold the information needed to code for the many features of multicellular organisms?