Question

Mexico City is an example of how humans alter their environment because it was

Answer 1

B.

built on drained and filled lake beds

Explanation: got it correct on my quiz, so here it is.

Answer 2

Mexico City was originally located on islands on the lake Texcoco, which was later dried to account for the growth of population. Humans altered the environment because they dried Texcoco - and it's almost non-existent today