Public Domain Image. Diffusion is the tendency of molecules to spread into an available space. Without other outside forces at work, substances will diffuse from a more concentrated environment to a less concentrated environment.Passive transport is the diffusion of substances across a membrane.This is a spontaneous process and cellular energy is not expended. Molecules will move from where the substance is more concentrated to where it is less concentrated.ithout other outside forces at work, substances will diffuse from a more concentrated environment to a less concentrated environment. Passive transport is the diffusion of substances across a membrane. This is a spontaneous process and cellular energy is not expended.
Tweet. Today, people around the country will celebrate Juneteenth, the anniversary of the day (June 19, 1865) slaves in Texas learned that slavery had been outlawed. The news came two and a half years after President Abraham Lincoln had issued the Emancipation Proclamation.
Juneteenth Flags 2000 Juneteenth, also known as Emancipation Day, is the oldest known celebration of the ending of slavery in America. It was on June 19, 1863 (Juneteenth), that Union soldiers arrived in Galveston, Texas, to deliver the news that the Civil War was over and the slaves were free.