Due to an increase in population and the use of nearby land for farming, there are toxic levels of chemicals in the water.5/30Duetoanincreaseinpopulationandtheuseofnearbylandfor farming, there are toxic levels of chemicals in the water. falllownessshortageillnessGiải thíchĐáp án A increase: sự gia tăng >< fall:sự giảm sút