How did the allies manage to turn the tide against the Germans in Europe?

At first German were winning against the allies  

Explanation: The following shows how: Battle against U-boats in Atlantic, Soviets turn back Nazis at Stalingrad, -Allies drive Germans out of North America, -Allies invade Italy, British and American bombers battle Germany, -Casa Blanca conference Hope This Helped!

it will increase due to the time span

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.