Answer:
I believe the correct answer is A.
Often at the end of a hot,humid day appears the thunderclouds. <span />
The answer is B. False. Source cards are index cards which are used to take note all the necessary information about the sources you have used. Source cards only contain the following contents: Author, Title of the Book, Place of Publication, Location of source and source number. Whereas, a library call number appears on a specific part of a book, e.g. spine of book, which are used as codes in order to easily locate the book in the library.
Yes, people spend lots of time on it and if it was taken away, it would affect many people.
