Final answer:
The quantity of agricultural farms is a key metric that differentiates developing nations from developed ones.
Step-by-step explanation:
A key metric that differs a developing nation from a developed one is the quantity of Agricultural Farms. Developed nations generally have a higher number of agricultural farms compared to developing nations, as they have advanced technology and infrastructures in place to support large-scale farming. This allows them to produce more food and have a more stable agricultural sector.
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