The chemical formula of calcium carbonate is CaCO3. The elements in this compound are (a) calcium, carbon, oxygen (b) calcium, oxygen
(c)calcium, hydrogen, oxygen

How can rereading a passage to clarify the meaning of a later one?

How are the two arguments made in the passages different? a. the first passage claims that pets in class will children with health problems; the second passage says pets will make some health problems worse. b. the first passage claims that students’ nervousness will decrease around pets; the second says that students’ nervousness will increase around pets. c. the first passage claims that pets will make the teacher’s work easier by keeping students busy; the second passage says pets will make the teacher’s work harder. d. the first passage claims that pets in school will be good for kids’ mental health; the second passage says pets will be bad for kids’ mental health.

How was don quixote different from the literature before it? how did it signal a change in the history of literature? your answer should contain at least one hundred words.