Suggest why triglycerides are more valuable to a small desert mammal as a food store than carbohydrates.

Based on the wording of the question, it appears that you can suggest multiple possible reasons as to why you think a small desert animal finds a greater benefit from triglycerides as energy storage than carbohydrates. One possible reason is a simple caloric benefit. A calorie is a unit of food energy. Carbohydrates offer 4 calories per gram of food; however, fats offer 9 calories per gram of food. Triglycerides are a type of fat, so an animal that uses them for its diet is getting nearly double the calorie intake and storage than it would be if it were eating mainly carbohydrate food sources. If food was plentiful, a high fat diet wouldn't be ideal; however, food sources are not plentiful in the desert. By focusing on higher fat diets, a small dessert mammal is better able to meet its caloric needs between longer fasting periods.
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