Answer:
<h3>the percentage change in quantity demanded divided by the percentage change in price.</h3>
Explanation:
- The basic feature of price elasticity of demand is to indicate that elasticity of demand of a good or a service change according to the change in the price of the good or the service.
- The price elasticity of demand measures the consumers' behavior of quantity demanded to a change in price. It is the percentage change in quantity demanded divided by the percentage change in price.
- Symbolically, it can be written as:
Elasticity of demand= 
Three social classes<span> in </span>ancient China were<span>: landowning aristocrats peasant farmers merchants Aristocrat-owned houses had courtyards, gardens, fine furniture, silk hangings, and a wall around the house to keep out bandits. Aristocrats relied on farmers to grow the crops that made them wealthy</span>
Geography influences our life now and it did so in the past. Because of this it helps understand the reasons for some events.
For example geography helps you understand why ancient Greece was composed of many small independent city-states rather than one empire: Greece is composed of many islands and valleys separated by mountains, and it was easy to defend those settlements so they were not conquered by other settlements ( as it was the case in other countries).
I believe the answer is: <span>Learned helplessness
</span><span>Learned helplessness refers to the feel of helplesness that created by exposing an individual to a negative situation for a long period of time, to the point where they perceive the negative situation as something that 'normal' or 'supposed to happen'</span>
