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, also known as Juneteenth Independence Day or Freedom Day, is an American holiday that commemorates the June 19, 1865 announcement of the abolition of slavery in the U.S. state of Texas, and more generally the emancipation of enslaved African-Americans throughout the former Confederacy of the southern United States. Celebrated on June 19, the word is a portmanteau of June and nineteenth. Juneteenth is recognized as a state holiday or special day of observance in forty-five states. The holiday is observed primarily in local celebrations.