threat to our environment is the destruction of the ozone layer, which protects the earth from the harmful effects of the suns radiation. Also, increased carbon dioxide emissions and pollutants in the atmosphere appear to be making the earth warmer. Called the greenhouse effect, this worldwide warming trend may have very harmful effects.Global problems affect the modern world. Todays rapid changes have made countries more interdependent than ever before, shrinking the world into a global village. As the world grows smaller, events in any one area have a greater impact on other parts of the world. National borders do not limit the effects of pollution or environmental destruction. Even poverty in some areas affects other areas because of migration and its impact on the world economy....
