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.
Freedom Day - Emancipation Day. Juneteenth is the annual day of celebration started 135 years ago by former American slaves. As soon as the Civil War was over, almost all of the slaves in the South were freed  but not those in Texas. Even though the Emancipation Proclamation was effective on January 1, 1863, the Texas slaves were not released until 1865. One year later, they began their celebration of freedom and called it Juneteenth, the shortened version of June 19th.