Which type of ecosystem would you expect humans to depend on the least to meet our needs for food and shelter?

The answer is alpine ecosystem, due to the fact theres very little trees and it has a lot of mountains and valleys, but it's such harsh weather(snow, etc.) it'd be hard to locate food and water, along with other vital things.

i think it is a system for harvesting crops more easily

this is not a question its simply asking you to read and write a few sentences and   the question on the bottom its fairly easy, you can do this!