Mexico City is growing because . a. it is the center of industry in Mexico c. it is the political center of the country b. the city can easily trade with the United States d. All of the above

the answer is D

Explanation:It's suburbs are spreading up the sides of the mountains that surround the valley of New Mexico. Newcomers are also filling the areas that were once covered by the valleys lakes, which were drained want to go to allow for expansion.

b.

developed countries have tended to improve the environment, while developing countries have tended to damage it.