At the end of the 20th century the world is changing in important ways. Until recently, nations acted independently. Each country did its business and tried to solve its problems alone. But now, the economy is worldwide and communications tech- nologies have connected people all over the globe. Many problems are global, too, and can no longer be solved by individual nations.
Environmental destruction is one of these problems. As the world's population has grown and technology has developed, the environment has suffered. some nations have begun to try to stop the pollution and the enyironmental destruction. But the environment is global*the atmosphere, the oceani, and many forms of life are all connected. Thus, the solutions require global thinking.
The problem of ocean pollution is a good example. All the oceans of the world are connected. Pollution does not stay where it begins. It spreads out from every river and every harbor and affects bodies of water eve4rwhere.
For centuries, people have used the oceans as a dumping place. Many cities take tons of garbage out to sea and dump it there. The quantity of garbage that ends up in the water is incredible. Five million plastic containers are thrown into the world,s oceans every dayl Aside from plastics, many other dangerous substances are dumped in oceans. These inciude human waste and chemicals used in agriculture. And every year, oil tankers accidentally spill millions of gallons of oil into the sea.
Some people believe that the oceans are so large tJ:at chemicals and waste will dis- appear. However, many things, such as chemicals and plastics, stay in the water and qeate problems. They eventually float to shore and are eaten by tiny sea oeatures. Then the larger animals that eat the tiny creatures are poisoned and die. Harbors and coasts around the world have become unsafe for humans or animals. The world's fish populations are rapidly shrinking.
Another global pollution problem concems the atrnosphere. Until recently, chlor- fluorocarbons (CFCs) were used around the world in manufacturing refrigerators. Scientists discovered that these CFCs were destroying the ozone layer in the atmos- phere. The ozone layer helps protect the earth fro
At the end of the 20th century the world is changing in important ways. Until recently, nations acted independently. Each country did its business and tried to solve its problems alone. But now, the economy is worldwide and communications tech- nologies have connected people all over the globe. Many problems are global, too, and can no longer be solved by individual nations.Environmental destruction is one of these problems. As the world's population has grown and technology has developed, the environment has suffered. some nations have begun to try to stop the pollution and the enyironmental destruction. But the environment is global*the atmosphere, the oceani, and many forms of life are all connected. Thus, the solutions require global thinking.The problem of ocean pollution is a good example. All the oceans of the world are connected. Pollution does not stay where it begins. It spreads out from every river and every harbor and affects bodies of water eve4rwhere.For centuries, people have used the oceans as a dumping place. Many cities take tons of garbage out to sea and dump it there. The quantity of garbage that ends up in the water is incredible. Five million plastic containers are thrown into the world,s oceans every dayl Aside from plastics, many other dangerous substances are dumped in oceans. These inciude human waste and chemicals used in agriculture. And every year, oil tankers accidentally spill millions of gallons of oil into the sea.Some people believe that the oceans are so large tJ:at chemicals and waste will dis- appear. However, many things, such as chemicals and plastics, stay in the water and qeate problems. They eventually float to shore and are eaten by tiny sea oeatures. Then the larger animals that eat the tiny creatures are poisoned and die. Harbors and coasts around the world have become unsafe for humans or animals. The world's fish populations are rapidly shrinking.Another global pollution problem concems the atrnosphere. Until recently, chlor- fluorocarbons (CFCs) were used around the world in manufacturing refrigerators. Scientists discovered that these CFCs were destroying the ozone layer in the atmos- phere. The ozone layer helps protect the earth fro
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