It is avantagous for animals that migrate to store energy in the form of lipids instead of carbohydrates this is becuause

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.

b exhibiting favoritism toward the kikuyu people.