What piece of information in passage 2 is different from passage 1? A.
The waters of the ocean turned acidic in the last few hundred years
B.
Ocean acidification affects the shells of marine animals.
C.
Shells of marine animals contain calcium carbonate.
Correct - D.
Ocean acidification may be a great blessing for marine life.

harmed

explanation:

type of error:

the error in the sentence is a "dangling modifier". a dangling modifier is a phrase, word or clause that "dangles" because there is not target to modify. in this case, "after mopping the floor" is the dangling modifier since it has no word to modify. the noun "house" cannot mop the floor; therefore there is a mistake in the writing of the sentence.

not sure maybe the subject closer to it or subject-verb agreement