Atherosclerosis is a disease in which plaque builds up inside your arteries. Arteries are blood vessels that carry oxygen-rich blood to your heart and other parts of your body. Plaque is made up of fat, cholesterol, calcium, and other substances found in the blood. Over time, plaque hardens and narrows your arteries. This limits the flow of oxygen-rich blood to your organs and other parts of your body.
Here's a listing of the ten most popular languages spoken worldwide, along with the approximate number of primary or first language speakers for that language. 1. Mandarin Chinese - 882 million. 2. Spanish - 325 million. 3. English - 312-380 million. 4. Arabic - 206-422 million.
The most widely studied language family in the world is the Indo-European. There are a number of reasons for this: Many of the most important languages of the world are Indo-European. These languages are official or co-official in many countries and are important in academic, technical and world organisations.