Please please help me i do not get this

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.

Melissa is interested in her family tree and how her family has changed over its many generations. melissa probably more closely resembles

At stp, which substance is the best conductor of electricity? a. nitrogen b. neon c. sulfur d. silver