Climatic factors greatly influence Africa's agriculture, which is considered the continent's single most important economic activity. Agriculture employs two-thirds of the continent's working population and contributes 20 to 60 percent of every country's gross domestic product (GDP).
In most African countries, the agricultural sector, which can be unstable, employs roughly half of the working population; however, in some countries such as Burundi, Burkina Faso, and Madagascar, the proportion is much higher—around 80 percent.