is this sentence complex ,compound or simple 1. although the traffic was heavy the bus brought us to school on time.

Alow pressure system is formed when an air mass cools over a cool surface and sinks. true or false

Fertility and mortality rates are higher in more developed nations.

In the von thunen model of agricultural land use, what is produced closest to the city epicenter? a. dairy, vegetables, and fruits b. field crops, such as corn and wheat c. beef and other animal products d. wood and lumber