Advancements in which of the following pieces of technology allowed scientists to make new discoveries about materials on an atomic level?

Which statement is true about the part of the electromagnetic spectrum that human eyes can detect? it contains only the colors of the rainbow and television waves. o it is divided into seven ranges of wavelengths. it contains ultraviolet, visible, and infrared light. it is divided into nine ranges of wavelengths.

Liv sheldon given the balanced equation for an organic reaction: c2h2 + 2cl2 → c2h2cl4 this reaction is best classified as *

Chen drew a diagram to compare the ways in which different organisms obtain nitrogen. which label belongs to the area marked z?