Complex sentence: In warmer climates, there is often a sharp population decline in the summer months, when the temperature increases above 25 ° C. Meanwhile, there is no population decline in colder climates, such as Iceland, Finland, northern England, and high elevations.
Split into simpler sentences: In warmer climates, there is often a sharp population decline in the summer months, when the temperature increases above 25. There is no population decline in colder climates, such as Iceland, Finland, northern England, and high elevations.