Which of these is anl advantage of hydropower

B. It has high power plant efficiency.

Explanation:

Hydropower is the renewable energy source that converts the potential energy of stored water into the kinetic energy of flowing water and uses the same to generate electricity. Since water stored at height has ample of potential energy, hydropower plants are highly efficient in generating the power.It has many disadvantages such as harmful effects on aquatic organisms by construction of dams and high cost of plant constriction.

stratosphere: as the altitude increases, the air temperature increases. the stratosphere has a layer of ozone, called the ozone layer. this layer absorbs most of the ultraviolet radiation from sunlight. this results in the stratosphere being warmer.