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.
Overview. Irritation of the airways by infections, inflammation, inherited disorders or structural abnormalities can cause increased mucus production and coughing up phlegm.Hair-like projections on the cells, lining the airways, move mucus up and out of the lungs.neumonia is a viral, bacterial or fungal infection of the air sacs and supportive tissues of the lungs. The infecting germs along with the immune system response to the infection cause airway inflammation with an associated increase in phlegm production.