Biện pháp hiệu quả nhất để giảm ô nhiễm nguồn nước ngọt, biển và đại dương là

Which statement is an accurate description of life in mongolia in recent years? the majority of the population now lives in cities. after a brief period of democracy, communists regained control of the government. subsistence farming remains the primary economic activity in the country. relations between mongolia and china are now tense. -gradpoint