molecular energy level. (physical chemistry). One of the states of motion of nuclei and electrons in a molecule, having a definite energy, which is allowed by quantum mechanics.1  Facebook.olecular energy level. (physical chemistry). One of the states of motion of nuclei and electrons in a molecule, having a definite energy, which is allowed by quantum mechanics. 1  Facebook.
Air first enters your body through your nose or mouth, which wets and warms the air. (Cold, dry air can irritate your lungs.) The air then travels through your voice box and down your windpipe. The windpipe splits into two bronchial tubes that enter your lungs.
Electric heaters produces heat in the rooms to warm up the room but due to the heat air becomes dry in the rooms. Especially while sleeping in bedrooms with electric heaters the problems are. Breathing dry air prompts to respiratory issue like asthma, bronchitis, sinusitis furthermore nosebleeds because of dried layers.