Humans have historically obtained food from which three main food systems?

Name: Humans have historically obtained food from which three main food systems?
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The three main food systems historically utilized by humans are rangelands (for grazing livestock), croplands (for growing crops), and oceanic fisheries (for seafood). While the other choices include some areas that contribute to human food systems, they are not as historically significant as these three main sources.

Humans Have Historically Obtained Food from Which Three Main Food