Why must firms use land, labor, and
other resources efficiently in per-
fectly competitive markets?

Why must firms use land, labor, and other resources efficiently in perfectly competitive markets? Producers cannot control price, so they must use resources as efficiently as possible in order to manage costs to make a "accounting" profit. ... If it's not unique, customers will buy alternative products at lower prices.

Explanation:

your answer is: a passage or quotation taken or selected from a religious book example: the bible, torah, and the quran.

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monasticism. people often do monasticism in monasteries