Help me asap I'll mark brain-list (this is science btw)

What do radio waves and microwaves have in common? both are at the side of the spectrum that has the shortest wavelengths. both are at the side of the spectrum that has the lowest radiant energy. both are at the side of the spectrum that has the lowest frequency. both are found next to visible light on the electromagnetic spectrum.

Argon, neon, and xenon are examples of

Observations show that interstellar clouds can have almost any shape and