U.S. energy consumption rose slightly in 2016 despite a significant decline in coal use. consumption/demandnatural gasoil/petroleumrenewables. Total U.S. energy production falls in 2016 after six consecutive years of increases. crude oilnatural gasnuclearpetroleum productsproduction/supplyrenewablestotal energy.
What Causes Throat Mucus & Phlegm? Post Nasal Drip:Post nasal drip occurs when an excessive amount of mucus accumulation in the nose and throat creates phlegm and causes coughing. Cold or Flu: During a cold or the flu, there is a production of clear, thin mucus in the nose and back of the throat.
If you have chronic mucus production, that could be a sign of a chronic infection in the lungs. Mucus is produced by the lungs in order to trap dirt and harmful particles from entering the lungs. The reason that colds and infections can cause mucus production is because they can cause inflammation and damage of the lining of our lungs, causing increased secretion of mucus and sloughing of airway cells.