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Approximately 70% of the water withdrawn worldwide each year is used for ____.
Q14: In nearly one in five death in
Q18: Explain the following statement (quotation at the
Q20: Which form of air pollution is most
Q33: What has played an important role in
Q44: Photochemical smog is composed of secondary pollutants
Q51: Aquatic life zones are the aquatic equivalents
Q79: At least half of the known species
Q85: There are an estimated 50,000 to 60,000
Q88: Large reserves of _ are located in
Q96: What class of pollutant can cause excessive