"Effects of Supply and Demand"

The world is changing the effects of supply and demand. There are at least three reasons that the world has changed. First, people use more products. For example, china is developing rapidly those days. Chinese people spend to eat a lot of pork, so the pork price in the world have in creased. Second, the economic effect changes supply and demand. The Beijing Olympics finshed their events. The world economy has grown, so all countries have increased spending for products. Third, the world changes effects of oil shocks. When the U.S attacked Iraq, oil prices increased. All countries' economies had big damages because of all prices, spending, and increases for poor people. Now the world is changing in a variety effects. We should care about changes in the world effect our lives.