to explain that climate change will affect tourism, a major source of income for islanders
Explanation:
According to the Newsela article "Climate Change in Hawaii and U.S. Tropical Islands.", the author's purpose in mentioning the economies of the islands is to explain that climate change will affect tourism, a major source of income for islanders.
Based on the article, the author talks about the effects of climate change in the small town of Hawaii where the villagers rely mostly on fish for their business.
