What natural resources have declined in the horn of africa?

The natural resource of food has declined in the Horn of Africa. There are several important causes behind this. The basic reason is the harsh environment. The second important reason is the lack of knowledge in the farming community. Another important cause is the increase in the population and so scarcity of food also increased.

Ibelieve the answer is c. map projections.hope my answer has you : )

Ithink its convection.hope this plz give brainliest!