The submersible Trieste was the first to venture to the bottom of the Marianas trench in 1960 at a recorded depth of 35,800 feet. What hazards were the occupants subject to at this great depth ?

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. 

Answerseasonal dry and wet winds this answer is right outta of the book