Question 1
The typical brown color of feces comes from
◦ blood cells.
◦ degraded food substances.
◦ bile pigments.
◦ melanin.
◦ digested blood from meats.
Question 2
The use of fat as an energy storage tissue evolved due to
◦ a diet that was high in fat.
◦ the frequent inability to obtain food.
◦ a diet high in carbohydrates.
◦ excess food intake.
◦ the need for insulation.