Respiratory Distress Syndrome. Respiratory distress syndrome of the newborn, also called hyaline membrane disease, is the most common cause of respiratory distress in premature infants, correlating with structural and functional lung immaturity. The pathophysiology is complex.
Orange juice with pulp is a heterogeneous mixture. The pulp is not uniformly distributed throughout the juice, often settling at the bottom of the jug, resulting in regions with distinctly different properties.
For example, when we mix water with alcohol, we get a homogeneous mixture of alcohol and water. Air is a homogeneous mixture of oxygen, nitrogen, carbon dioxide, etc. A heterogeneous mixture does not have a uniform composition throughout its mass. There are visible and sharp boundaries between the various constituents of a mixture. For example, a mixture of sand and common salt is heterogeneous.