Use the information to answer the following question. Both Mexico City and New York City are highly populated cities.

Why are air pollution levels in Mexico City greater than they are in New York City?

A.
because Mexico City receives a large amount of yearly precipitation

B.
because Mexico city is surrounded by mountains that trap the polluted air

C.
because Mexico City operates a larger public transit system than New York City

D.
because Mexico City contains more cars and buses than New York City

muslims have taken his goods and products to different parts of asia an indonesia. sometimes just traveled and trade, but in other occasions, stayed in the place and made a living.

trade was the key for muslims economies to prosper. their commerce routes reached far places like malaysia and java in the 11th century.

another important factor for prosperity was that muslim states served as the middle point for european traders.

they used to travel by land but sailing the seas -the indian ocean- really increase the exportation of products.