The coordinating conjunction in the sentence is the word and.
A coordinating conjunction is a word that connects two elements (words, phrases or clauses) of equal grammatical rank in a sentence. There are seven coordinating conjunctions: for, and, nor, but, yet and so.
In this case, the word and serves as a connector between the phrases Stead Adams can hula hoop for ten minutes without stopping and I am jelaous of her skills.
