Question: The Amazon River Basin is home to many dams with many more planned for the future. In Brazil, dams are seen as a key to economic growth, but they often benefit some populations while depriving others of their livelihoods, changing water flow and disrupting fish populations and agriculture downstream. This is an example of how water resource management may be challenged by: Question options: degradation of the water supply. rapid population growth. conflicting demands or needs. geopolitical threats.