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What assumptions in the perfect competition model ensure that economic profit is zero in the long run? Explain.
Growth Spurt
A rapid period of growth, particularly in height and weight, often occurring during puberty.
External Changes
Modifications or variations in the surrounding environment that can impact individuals or systems.
Primary Sexual Characteristic
The main reproductive organs and structures that are present at birth and are directly involved in reproduction.
Secondary Sexual Characteristics
Physical traits not directly involved in reproduction but indicative of sex, such as enlarged breasts in females and deeper voices in males.
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