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.
Confidence votes 1.6K. Dams produce electrical energy by utilizing the energy in the water stored in an elevated lake. Outlets in the dam allow water to escape down a pipe, trading potential energy for kinetic energy, ie, as it falls it moves faster. At the bottom of the dam, the fast moving stream of water enters a turbine where the it hits the blades of the turbine and makes it spin rapidly.