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.
1 If you have phlegm in the throat, causes include irritation in the airways of the lungs. 2  When the airways in the lungs are irrigated, excess mucus and phlegm is secreted to soothe the irritation. 3  Hence, to clear the phlegm and prevent build-up, you need to soothe the irritation in your airways.