Nasal congestion Nasal congestion is a stuffy nose, and can be accompanied by blocked ears, sore throat, and more. Pleural effusion Pleural effusion is buildup of fluid in the pleura and can cause difficulty breathing or chest pain.
A hydroelectric dam is essentially a mechanical gateway that can control how often, how much, and how fast the water is allowed to passed through. Water above the dam is collected and stored into a reservoir.
A hydroelectric power plant requires a water reservoir, the size of which depends on the size of hydroelectric generators and the topography of the land. Creating a reservoir negatively impacts the surrounding area by flooding land that could be used for agriculture instead.