Describes how COPD, or chronic obstructive pulmonary disease, is a progressive disease that makes it hard to breathe. Details the symptoms of COPD. Shows how the disease works in the lungs. Explains how progress of the disease can be slowed.
Eratosthenes of Cyrene was a Greek mathematician, geographer, poet, astronomer, and music theorist. He was a man of learning, becoming the chief librarian at the Library of Alexandria. He invented the discipline of geography, including the terminology used today. He is best known for being the first person to calculate the circumference of the Earth, which he did by comparing altitudes of the mid-day sun at two places a known North-South distance apart. His calculation was remarkably accurate. H
I guess the person who 'proved' the world was round was Ferdinand Magellan, who was the first man to sail around the world. That was the first time it was conclusively proven that the world was round. Note that he never disproved that a belief in flat Earth was wrong. Neither Magellan nor anybody he ever met believed the Earth was flat. All Europeans knew it was round. Other cultures may have thought it was a dome but nobody had ever thought it was flat. ____Those who have answered âColumbusâ are completely wrong.