Hi the rectal route is preferred over the oral route because- rectal medications are usually not subject to first pass metabolism.
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Answer:
The idea of concentrations and gradients within them is important when understanding the movement of substances across cell membranes. The more particles there are in a certain volume, the more concentrated those particles are. A solution with a low solute concentration has a high water concentration, and a high water potential.
I would say a lion because of the food it gets.