A specialized dictionary is a dictionary that covers particular topics in detail outlining and defining important terminology and information in a particular area. A specialized dictionary might exist in the sciences, math, engineering or other academic field to provide specific information in regards to terminology in that field.
Frank is going to be the indirect object
Answer: The correct answer is by helping readers relate to the species that depend on the reefs to survive.
Explanation: The author describes the biodiversity of the coral reefs and makes us see the importance of the species there.
Adding the transition "however" at the beginning to connect the ideas better. Because the 4th sentence was an argument and however is a transition in oppostition. The point you're trying to make in the paragraph is to the opposition of the 4th sentence statement.