Noble gases are very unreactive, so you're not going to see them anywhere that reactivity is important. In fact, one of the main places they're used is in environments where reactions need to be stopped - to replace air in a reaction environment, for example.
To make steel, batteries, and Xerox machines, you wouldn't want something unreactive. Fluorescent light bulbs ("neon bulbs"), on the other hand, fit the bill nicely.
4. eyesight
explanation:
i’m not 100% bc you didn’t give any info on darwin
Wavelength decreases as frequency increases.
Imagine a heart rate graph. As the heart beats faster, frequency increases and the time between heartbeats decreases (wavelength).
Make sense that way?