Explain tidal air in biology​

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

Jane has a sprained ankle, and her doctor gave her a prescription that states: “ibuprofen caps 200 mg tid po.” what does this prescription say, in spelled-out form?

Why is the sun hot and can burn you if you get to close