the n = 8 to n = 2 transition in the bohr hydrogen atom occurs in the region of the electromagnetic spectrum.

Students will complete the star 360 test once a quarter t or f

The car wash owner uses the equation y=x+44 to model the data, where x represents the number of days the business has been open and y represents the number of cars washed.

In the image, layer a is the topmost layer. layer c contains fossils from the precambrian era. layer b contains dinosaur fossils, and layer a contains fossils of mammals. which two statements are supported by this evidence? 1. mammals lived before the precambrian era. 2. dinosaurs and mammals existed in the precambrian era. 3. dinosaurs evolved after precambrian organisms. 4. precambrian organisms evolved after dinosaurs. 5. precambrian organisms were the first life-forms to become fossilized, according to this sample.