This sentence has a clunky dependent clause tacked on the end. We can make it sound better by taking out some words and making it an appositive phrase: "Defying all expectations, the space shuttle reentered the atmosphere at 3:57, three whole minutes ahead of schedule." Or, alternatively, one could also change "that was" to "which was," but one introduce a phrase that provides additional information about a subject and follows a comma with "that"; one should use "which" instead in this instance.

This sentence contains a logical error. The long line was the cause of missing the start of the movie, so the use of a contrasting conjunction like "although" here is wrong. Replacing it with "Because" or "Since" would be a simple correction.

This sentence is a fragment, because it does not have a main verb. Changing the noun phrase “the audience’s worry” to a noun and verb fixes this nicely: "In particular, the audience worried that the vicious dogs might bite."

This sentence is a run-on. There are two independent clauses separated only by a comma. Change that comma to a semicolon to fix the problem: "Paul was frustrated because his phone was not working; service was inconsistent."

This sentence has a comma splice. This is when two independent clauses (clauses which can stand on their own as complete sentences) are separated only by a comma. A semicolon works well here. The corrected sentence reads, "The museum is hosting a Georgia O'Keefe exhibit until January; we should go this weekend."

This sentence is not coordinated correctly. The first clause explains why something is happening, so it shouldn’t be connected to the main clause with an “and.” The corrected sentence reads, "Due to global temperature increases, the polar ice cap is melting at an alarming rate."

This sentence is a fragment because it does not have a subject. Instead of starting out with the gerund ("-ing" verb used as a noun) “enjoying,” we need a subject and a verb that agrees with it. One example of how to correct this sentence would be, "I enjoy the sensation of standing in the warm rain and listening to it hit the pavement."

This sentence is a fragment; read it out loud and you will hear that it sounds incomplete. This happened because the "that" turned the main part of the sentence into a modifying phrase. Take this out to fix the fragment: "The cafeteria was serving "seafood surprise" for lunch and subsequently not attracting many customers."

In this sentence, the independent clauses "Virtue is, in many ways, a foreign idea to him" and "every kind gesture he thinks he knows is proven false" are linked with a comma. This is called a comma splice and should be avoided. Replacing the comma with a semicolon fixes the error.

"Even if he were to unknowingly live out the prophecy," is a dependent clause. It could be combined with the sentence before it, if a comma were placed after "wealthy," the period after "wealthy" is incorrect.