Time zones are based on their distance from the a. equator b. north pole c. south pole d. prime meridian

Time zones are vertical,
 distance from equator , north pole and south pole would be horizontal
 so the answer would be D. Prime Meridian.

Humans have survived and thrived in mexico city by using technology to create greater access to land. when the spanish conquered the aztec capital, tenochtitlan, in the 16th century, they built mexico city by draining the lakes and filling in the lake water to create more arable land for agriculture. this technique of land reclamation has continued to be fundamental to human civilization in mexico city.