which statement is true about the part of the electromagnetic spectrum that human eyes can detect?

question 5 options:

it contains ultraviolet, visible, and infrared light.

it is divided into seven ranges of wavelengths.

it contains only the colors of the rainbow and television waves.

it is divided into nine ranges of wavelengths.

Astudent wants to test the hypothesis that fertilizer improves the growth rate of grass seeds. to test this hypothesis, the student put the same amount of grass seed in 3 containers with the same type of soil. the student measured the growth at the end of the week. all plants received equal amounts of water and sunlight. if you were asked to graph this data, what would you place on the x-axis? a. fertilizer b. water c. plant growth d. week one