According to sigmund freid, everything that has been repressed from conscious awareness makes up the a. conscious mind b. preconscious mind c. unconscious mind d. altered state of mind 25 !

Hydroelectricity provides about 7 percent of the electricity generated in the united states. (a) explain how a hydroelectric power plant converts energy stored in water into electricity. (b) identify two factors that determine the amount of electricity that can be generated by an individual hydroelectricity power plant. (c) describe the two main types of land-based hydroelectric power plants. (d) describe two economic advantages and two environmental disadvantages of hydroelectricity.