Answer: A
. the history of the Hoover Dam and its impact on the Southwest region.
Explanation:
This question is based on the article, ''The Hoover Dam'' by Michael Stahl. In it the author begins by describing what hydroelectricity is and how it came about.
The author then used the Hoover Dam to illustrate the points made about hydroelectricity by first giving a brief history of the construction of the dam and the sacrifices it took to build it. The impact the dam had on the area it supplies - the Southwest - was also analysed.
B represents a person with osteoporosis due to excessive bone reabsorption.
What is one environmental concern that is not currently being addressed properly, as not enough research to produce reliable data is occurring?
solar it takes up the least amount of space and causes no pollution also it is unlimted