The entire electromagnetic spectrum can be divided into seven bands: radio, microwave, infrared, visible, ultraviolet, x ray, and gamma ray (from longest to shortest wavelength). to which of these two bands is earth's atmosphere the most transparent?

i believe it is b. what was the cause of the big bang

hope this !

the first american roller coaster was the mauch chunk switchback railway, built in the mountains of pennsylvania in the mid-1800s. the track, originally built to send coal to a railway, was reconfigured as a "scenic tour."

the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form