London's ancient core, the City of London, largely retains its 1.12-square-mile (2.9 km 2) medieval boundaries and in 2011 had a resident population of 7,375, making it the smallest city in England. Since at least the 19th century, the term London has also referred to the metropolis developed around this core.ondon has a temperate oceanic climate (Koeppen: KÃ¶ppen), cfb similar to all of Southern. Britain despite its reputation as being a rainy, City london receives less (precipitation 601 (mm 24) in in a), year Than, Rome, Bordeaux, Toulouse naples and Even sydney In, australia but those are spread over more. days
Causes. Dyspnea is usually caused by disorders of the lungs or heart (see Table: Some Causes and Features of Shortness of Breath). The most common causes overall include. Asthma. Pneumonia. Chronic obstructive pulmonary disease (COPD).
An associated increase in the amount of fluid in the blood vessels of the lungs causes shortness of breath because the excess fluid from the lungs' blood vessels leaks into the airspaces (alveoli) and interstitium in the lungs. This accumulation of fluid in the lung is called pulmonary edema.