Which statement best differentiates between the terms supine and prone? A. Supine is lying on the back; prone is lying with the back facing up.
B. Supine is standing; prone is lying on the back.
C. Supine is lying with the back facing up; prone is lying on the back.
D. Supine is lying on the back; prone is standing.

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