GUYS PLEASE HELP I HAVE SCHOOL TOMORROW AND THIS IS THE LAST QUESTION BEFORE I GET TO GO TO A HAUNTED HOUSE XD. When a cell uses a channel to get large molecules across the cell membrane this is known as ___ diffusion.
That's all it gives me two answers please. *PLEASE HELP*

Which of the following describes a boom period? a. as one population increases, another population decreases. b. as one population increases, the other population also increases. c. as one population decreases, another population increases. d. as one population decreases, another population also decreases