How might reef sharks be affected if corals were to
disappear?

If the coral reef were to disappear the reef shark would lose a lot of its food sources like the butterfly fish and also the animals that rely on the coral reef would also disappear too

hope this helps

have a happy holidays :)

quite an interesting way to teach topic sentences, because the answer to this question is the best definition of a topic sentence that one can present, it is as if answering the questions taught you how to do it, this is some real teaching, it is terribly well-done.

the topic sentence in this paragraph is:

topic sentences writers stay on track and keep a paragraph from becoming an aimless collection of sentences about an idea.

which incidentally tells you what a topic sentence should be.