Study the image taken during World War I.
This image was originally published in an American
encyclopedia after the war. Who is the intended audience
of this kind of source?
O general public
O German readers
O military personnel
O experts and historians

Answer (d) the greenhouse effect is primarily caused by car and trucks;

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. 

This question has already been answered by someone else.here is a link.  hope that it .