Many countries are taking steps to clean up their rivers (salmon have now returned to England’s Thames River), to control air pollution (it has declined 10 percent in the cities of the United States with the worst smog), to tap environment-friendly energy sources (80 percent of the homes in Iceland are heated with geothermal energy), and to conserve their natural heritage (Costa Rica and Namibia have converted about 12 percent of their total land area into national parks).
Ny.Sapelli sedang menungguku di rumahjw2019 jw2019