Human population growth rates are increasing. assuming that the biocapacity of earth does not change, what will need to happen to the average person's ecological footprint to best sustain our population a. it will need to increase b. it will need to decrease c. it will need to become zero d. it will need to stay the same

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.