Reading | Question 1 of 10

The phrase "So much" in the passage refers to

  • the negative effects of overland flow, rain, and evaporation on river water levels
  • water that a lake loses to outflowing rivers, to the lake bed, and to evaporation
  • the importance of rivers to the maintenance of lake water levels
  • the information given about ways that water can enter or exit a lake
Lake Water