In biology, diffusion, osmosis, and selectively permeable things are very important, especially at the cellular level. This guide also includes things on cell membranes and cell walls. Have fun!
#1 highest rank: in Werewolf since January 27, 2016 for almost two months. The air was thick as I felt him move closer to me. He bags me into a corner and places a hand on my hip. "I'm a vampire," he says without blinking. " I know," I say without blinking as well. "Your my soul mate, but we can never be together. Y...