Kayla is the girl who will teach you how to swim adjective

Well, there is no adjective as a single word - if that is what you are asking for. Instead, there is an adjective clause (which serves as an adjective).

The adjective clause is:  'who will teach you.'

Explanation:

The adjective clause 'who will teach you' describes the noun girl. It's the equivalent to saying this sentence:

                                    adj.                     N

Kayla is the "teach-you-how-to-swim" girl.  

Does that make sense??

to gain popularity at school, fitzgerald wrote plays for the school and cast himself as the star. he also joined one of the universitys most prestigious clubs.

is it "means of nourishment"