HELP ASAP ONLY HAVE FEW MINUTES!

Help with both please not only one .

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

Answer asap : ( a. how does mucus prevent the entry of pathogens? b. describe two ways white blood cells protect us from pathogens.

Which sample at stp has the same number of atoms as 18 liters of ne at stp