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.
C) heterogeneous. Homogeneous means all of one kind. Heterogeneous is a mix. Therefore if you have more than one substance in the mix it becomes heterogeneous. Soft drinks are a mix of caramel, water, and other ingredients with carbonation added. The word mix says it all, soda is heterogeneous. Pure gasoline is one substance, a by product of oil.