Final answer:
The Zhou Dynasty saw the introduction of iron agricultural tools and the implementation of crop rotation, both critical in enhancing farming efficiency and crop production.
Step-by-step explanation:
The two farming advances that developed during the Zhou Dynasty were iron technology for agricultural tools and the concept of crop rotation. Iron technology during the late Zhou period was initially developed for weapons but was eventually utilized to create more efficient agricultural tools like the iron plow.
These tools allowed farmers to cultivate harder soils and increased agricultural productivity. Additionally, the Zhou Dynasty's crop rotation approach, borrowed from earlier practices, helped in maintaining soil fertility and increasing crop yields by alternating the types of crops grown on a piece of land from year to year.