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.
In this article, we will look at how hydroelectric dams work, and what are their advantages and disadvantages. slide 1 of 5. Hydroelectric power produced by hydroelectric dams accounts for 20% of the worldâs total production of electrical energy. typical hydroelectric dam has the following main parts: 1  Water Reservoir: A large quantity of water is stored in a reservoir (or dam). 2  The height or depth of the stored water determines how much electricity can be generated. 3  As the depth increases, the generation of electricity also increases.