Hottest Cities in United States. Two major cities contend for the title of hottest city in the United States. The city that comes out on top depends on how you measure heat. Phoenix Arizona excels at extreme hot weather. It consistently ranks number one for the most days a year when temperatures rise above 89 Â°F or 99 Â°F. Miami challenges Phoenix for top spot on hottest year-round temperatures.
would a chemist most likely study: a leaf changing color in the fall. OR. a leaf floating on water. Follow.
Our chemists study the chemistry of DNA, proteins, and carbohydrates, the molecules of life, but also materials that have never before existed and promise to revolutionize the world. At UCLA, organic chemistry faculty, students, and postdocs: