Pls help you can even give me starters if you want!!

The following passage is an example of what type of text structure tornados are caused by unstable air interacting with the wind sheer the resulting formation can cause devastating effects

Identify the sentence in which the underlined word or words are punctuated incorrectly. a) pam was (well prepared) for the debate. b) she had (read three quarters) of the material more than once. c) she has always been (self assured). d) the winner needs a (two-thirds) majority of the votes.

Which of the following is an example of a periodical?