What kind of natural resources did aztecs used and why?

Well, the Aztec economy was heavily reliant on agriculture and trade. The land controlled by the Aztecs was fertile, allowing farmers to grow corn, squash, beans, avocados, hemp, tobacco and peppers. The Aztecs then used this surplus of food to establish marketplaces to trade for a variety of goods and services, including jewelry, raw materials, medicine and wood. Precious metals, such as gold, were also prevalent in the Aztec Empire.  

I have a picture for the Aztec for you