Supply is the amount of a good or service that’s available to buy. If there are 70 birthday cakes available for sale, the supply is 70. When there’s a lot of a good or service available, we say the supply is high. When there’s not much available, we say the supply is low. Demand is how much of a good or service people want to buy. If 50 people each want to buy a birthday cake, the demand is 50. Demand is high when many people want to buy a good or service. It is low when not many people want to buy the good or service.

A bookstore has 100 copies of Harry Potter and the Sorcerer’s Stone. 65 people want to buy one copy each. Based on the passage above, what is the demand for Harry Potter and the Sorcerer’s Stone?

The United States is considered to be this type of democracy:

Nature and the environment can affect the supply of a good or service. For example, almonds need a lot of water to grow. If there’s a drought, a long period of time with little or no rain, it can became harder to grow almonds. The cost of producing a good or service can also affect its supply. Imagine a new toy is very expensive to make. To save money, producers may not supply as many of the toy.

Sometimes, people are not able to buy all the goods and services they want because the goods and services are not available. People cannot find the goods or services or have trouble finding them. This is called scarcity. The good or service that is in very low supply is scarce.

Most countries that practice a communist economy usually have a poor economy because…

Tools we use to make products...

In an unlimited government, power belongs to whom?

This type of economic system is usually in countries that are poor.

In Brazil, the people elect officials to represent them in government. The government of Brazil is:

When a lot of people want to buy something, but it’s hard to find, the price often goes up. Imagine that a lot of people want to buy almonds because they’re healthy and are used in many recipes. Demand for almonds would be high. But if there’s a drought, almonds may be hard to find. When almonds are scarce, people may be willing to pay more for them. The almond producers can raise the price.

How does the author of this passage show that the price of something often goes up when a lot of people want to buy it, but it’s hard to find?

Imagine a scientific study comes out saying that almonds are not actually that healthy. Fewer people might want to buy almonds. Demand for almonds would go down. Almonds pile up because not many people are buying them. To encourage people to buy almonds, the producers may lower the price. The change in price of a good or service often follows the change in demand. When demand goes down, price goes down. When demand goes up, price goes up.

We’ve seen how price changes as a result of supply and demand. Well, the supply of something and the demand for it can also change as a result of the price! When the price of something is high, producers want to supply more of it for people to buy. They want to make more money by selling more of the product at a higher price. This is called the Law of Supply. On the other hand, when the price of something is high, the demand for it often goes down. Consumers want to save money. So, the more expensive something is, the less they want to buy it. This is called the Law of Demand.

For any good or service, there’s a price where the supply is exactly the same as the demand. Producers are willing to supply a certain amount of the good or service at that price. And consumers are willing to buy the same amount of the good or service at that price. This is called the equilibrium point. It’s also called the market-clearing price. When supply and demand become equal like this, people say “the market has cleared.”

The total number of people in a given area.

A measure of the number of people living in an area.

The movement of people from one place to live in another.

Religion has a strong impact on society.