Which layer of the atmosphere has the widest variation in temperature

Answer 1

The layer of the atmosphere that has the widest variation in temperature is the troposphere. This is the lowest layer of Earth's atmosphere, extending from the surface up to about 8 to 15 kilometers (5 to 9 miles) in altitude, depending on geographic location and weather conditions. In the troposphere, temperatures generally decrease with altitude, but they can vary significantly due to factors such as weather patterns, altitude, and time of year. This variability can be seen in day-night cycles, seasonal changes, and different weather systems, resulting in a wide range of temperatures.