Can you guys answer this for me?

The fauces connects which of th following structures to the oropharynx

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

Which is an example of a decomposer? a. bear b. algae c. grass d. bacteria d bacteria