Would a firm be willing to operate for zero economic profits? Explain what this might mean - and discuss

Select a particular industry and using the terminology from this topic, describe what you might expect to be important aspects of a firm in that industry's cost structure. (For example you might focus on the relative size of fixed, variable and marginal costs. Or perhaps the minimum efficient scale or concepts such as economies or diseconomies of scale.)

Does the law of diminishing returns have any conflict with economies of scale? Explain.