How does the author illustrate the harshness of "The Year Without a Summer"? 1. The author compares modern-day weather to the summer weather of 1816.
2. The author explains that Mt. Tambora's eruption was probably the largest in 1,800 years.
3. The author gives examples of how the lives of people in the Northern Hemisphere changed.
4. The author points out how other volcanic eruptions have not been as harmful as that of Mt. Tambora.