D. it has been improved by having unwanted substances removed
The Hippocratic Method and the Four Humors in Medicine.
Answer: Former president <u>Jimmy Carter </u>is a professor at Emory University in Georgia and a leading advocate for Habitat for Humanity.
Hope this helps!
Answer: Quantity demanded is the quantity:
customers will purchase at a specific point in time.
Explanation: Quantity demanded is a term used in economics to describe the total amount of a good or service that consumers demand over a given interval of time. It depends on the price of a good or service in a marketplace, regardless of whether that market is in equilibrium.