Scientists are analyzing the movement patterns of slime mold, which grows outward to search for its food sources by retracting from everything but the most efficient route, in an effort to better understand, how to optimize traffic patterns?

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.

a chain link fence because there so tiny even my albino donkey can't get out

what are the options? add them, then i will be glad to .