Why is the population density lower in northern Mexico than southern Mexico? A
Much of northern Mexico is covered by dense, humid rain forest protected by the government.

B
Much of northern Mexico is covered by hot, arid desert that makes living there very difficult.

C
Most of Mexico's valuable oil reserves are located in the southern region of Mexico.

D
Most of Mexico's fertile farmland is located along the southern coast of Mexico.

The correct answer is B. Much of the northern Mexico is covered by hot, arid desert that makes living there very difficult.

Explanation

In the north of Mexico is the Chihuahuan Desert, an arid and hot zone of about 500,000 km² that makes it one of the largest deserts in America. This desert encompasses part of the Mexican states of Chihuahua, Coahuila, Durango, and Zacatecas. Therefore, this region presents great difficulties for human settlements. So the correct answer is B. Much of the northern Mexico is covered by hot, arid desert that makes living there very difficult.

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