Which is true about africa?
a. apartheid is the official policy of africa
b. europe controls most of african nations today
africa is governed by the imf
d. the sahara desert forms a cultural barrier in africa

d. the Sahara desert forms a cultural barrier in Africa

Explanation:

The vast dune and ocean of sands that forms the prominent Sahara desert serves a big cultural barrier on the African continent.

Geographically, South of the Sahara lies huge expanse of tropical rainforest and the Atlantic. Going northward we see Mediterranean climate.

Culture is the way people live. The Sahara is home to diverse cultures. The Magrebs, Bendouins, Arabs are some of the dominant tribes. These cultures are very uinque in that the people are mostly nomads. They carry their animals about looking for pastures and water.

To the South lies the Yoruba, Ashanti etc. These cultures are rooted in farming as a means of food production.

Their cultures a quite distinct from the northern nomads.

Going from North to South we see distinct cultures and people.

the wrong statement is - c. a desert had more biodiversity than a marsh.

the deserts are one of the places of the planet where there's the least biodiversity. the reasons for that are the climate and the lack of food sources, which hampers both the number of the species that can survive in it, and the number of the individuals in the species itself.

the marshes, on the other hand, are places where there's perfect conditions for lots of organisms to thrive. the temperature is moderate and nice, the amount of water and the food sources are on a high level, so there's an abundance of both plant and animal life in them.