The lowest layer in the atmosphere is the it contains clouds of smog

Arotating space station is said to create “artificial gravity”—a loosely-defined term used for an acceleration that would be crudely similar to gravity. the outer wall of the rotating space station would become a floor for the astronauts, and centripetal acceleration supplied by the floor would allow astronauts to exercise and maintain muscle and bone strength more naturally than in non-rotating space environments. if the space station is 200 m in diameter, what angular velocity would produce an “artificial gravity” of 9.80 m/s^{2} 2 at the rim?

The electronic structure or chlorine is 2.8.7 what is the electronic structure of fluorine?

Smallest intensity of a stimulus that you can detect 50 percent of the time is