The land in Mexico City is sinking. What is the primary cause of this problem?

A.

deforestation caused by cutting down trees

B.

too much water being taken from underground aquifers

C.

too many offices and towers being built in the city

D.

dams being built upstream from Mexico City

Mexico was built on an old lake that was drained to provide land for the city. Water is continually pumped out of underground aquifers to prevent flooding and to provide drinking water. This makes the soil compact, causing the city to sink. The city has sunk about 30 feet in the last 100 years. As a result, buildings often shift, and ceilings and walls may crack. Sewer lines and water pipes have been damaged heavily. along with the population constantly needing to fix the damage.

B. too much water being taken from underground aquifers