How can tornado chasers and other weathers experts help people who are travelled through tornado country?

Tornado chasers and meterologists help predict bad weather when storms occur. When there is a tornado incoming, they help let people know that it is time to take shelter. Tornado chasers let meterologists know where the tornado or the storms are. Hope this helps you :))

a phrase is a set of word that make a sense, an expression formed by two or more words.

" teacher´s dictum on the possession of human "

" made a pile practicing "

" lived to an impressive age and dies "

a clause, in a grammar way is a series of words that have a complete meaning.

" was irritated by the persecution of those who called themselves "

the sentence that avoid faulty coordination is:

culture, which is well represented in philadelphia, plays a major role including theatre, music, and the visual arts.  

faulty coordination occurs when the writer gives equal importance two different ideas (clauses) which in fact are not equivalent. in order to correct a misplaced clause or idea, the writer can place less important or emphatic ideas in a relative clause as in the previous sentence.