This heading serves the author’s purpose because It lets the reader know that the autors are going to describe how honey relates to the story of sugar. This book is about the history of sugar and the changes and consequences that sugar brought to humanity.
A heading is a short phrase that describes what the following section is about. They help readers identify the main points of each section in the paper.
Some texts need of subheadings to indicate subpoints of the main text or idea.
So, taking those points into account, the purpose of the author is to catch the reader´s attention by writing a conspicuous or outstanding heading
Floods are made more likely by the more extreme weather patterns caused by long-term global climate change. Change in land cover—such as removal of vegetation—and climate change increase flood risk.
