'Natural activities' presentation slideshows

Chapter 5 - Externalities

Chapter 5 - Externalities. Public Economics. Externality Defined. An externality is present when the activity of one entity (person or firm) directly affects the welfare of another entity in a way that is outside the market mechanism.

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Lesson Four

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Lesson Four

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Medical Practices in The 1700 Hundreds

By George. Medical Practices in The 1700 Hundreds. Hermann Boerhaave. They did not know about germs, bacteria, or viruses in the 1700s so most medical practices used the theory of Hermann Boerhaave who thought that disease was the imbalance of natural activities

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