Which of the following statements is true?

Groundwater is not part of the water cycle.
Most of the earth's water is freshwater.
Refining oil pollutes the air with nitrogen dioxide.
Thermal pollution is the main disadvantage of hydroelectric power.

Question

Which of the following statements is true?



Groundwater is not part of the water cycle.
Most of the earth's water is freshwater.
Refining oil pollutes the air with nitrogen dioxide.
Thermal pollution is the main disadvantage of hydroelectric power.

anonymous · Answer

Thermal pollution is the main disadvantage of hydroelectric power.

anonymous · Answer

thanks