How does the firm-specific demand curve in a perfectly competitive market compare to that in a monopoly?

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In a perfectly competitive market, individual firms have no market power and must accept the market price. Therefore, their demand curve is perfectly elastic, or horizontal. In contrast, a monopoly has market power, allowing it to set a higher price than in a competitive market, resulting in a downward sloping demand curve.

How Does the Firm-Specific Demand Curve in a Perfectly Competitive