Answer:
Down below hope it helps :)
Step-by-step explanation:
The highlighted green phrases/words are called transitional phrases. They helped guide a reader through a long essay, they also help introduce new ideas. When the writer is done with explaining something and wants to move on explaining something else, they might use a transitional phrase to prevent confusing the reader and to help make their essay easier to read. That's why transitional phrases are often used, they help make essays much easier to read, help introduce the reader to a new topic or idea, and are extremely professional when writing an essay.