Oxygen, carbon, and hydrogen.
Mass and a stars mass is determined by the amount of matter available in its nebula
The correct answer is mitral valve prolapse.
The condition takes place when the leaflets of the mitral valve prolapse (bulge) into the left upper chamber, that is, left atrium of the heart, like a parachute at the time of contraction of the heart.
The symptoms of the condition are dizziness or light-headedness, irregular heartbeat, shortness of breath, chest pain that is not due to any coronary heart disease or heart attack, and fatigue.
The signs of mitral valve prolapse include a crisp mid-systolic click, succeeded by a late systolic mumble if regurgitation is existing.
I think urbanization has both upsides and downsides, but I think it should be discouraged for a few main reasons. Urbanization creates limited access to land, causing high prices in education, healthcare, food and water, housing, electricity and transport. This leads to an increase in the numbers of homeless people, or people living in insecure, rented housing. Another problem with urbanization is that growing cities lead to more traffic congestion, causing more accidents. Some more problems are presented with decreased air quality in larger cities, and defunded councils. On the other hand, some may see urbanization as a good idea because larger cities do create more job opportunities and more housing for a growing population. Overall, I don’t think urbanization is a good idea, mainly because it creates health risks, and the looming possibility of thousands homeless.
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