Explanation:
Both eras and periods are greater, but an era is more than 1 year
Answer:
The Sahara is dominated by two climatic regimes: a dry subtropical climate in the north and a dry tropical climate in the south. The dry subtropical climate is characterized by unusually high annual and diurnal temperature ranges, cold to cool winters and hot summers, and two precipitation maximums.
Category: Desert
Explanation:
Population in the area increased and more people got cars. Better traffic systems and more lanes were essential