During facilitated diffusion, which of the following do molecules use as transportation when they are too large to move through a cell membrane? A. air pockets B. vacuoles C. the endoplasmic reticulum D. protein channels​

segmentation=endoskeleton=backbone=coelom=tissues

you must remain stopped until the stop signal is retracted and the red lights are turned off. approaching traffic in the opposite roadway of a divided highway shall not be required to stop, even if the school bus has the stop-arm extended and the alternately flashing warning signal lamps on.

a=c and then d= c because of the band so you get ac/dc and you add them together you get sound waves