Q15: what two processes cause locations at high latitudes to receive less intense solar radiation compared to locations at lower latitudes?.

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. 

Ctrust me i know its c

Largely uneconomic because they provide little profit or food surplusi think so

The area they r in. this  the answer.