Erosion i believe is the answer
The answer is d, due to the helms-burton act
Where’s the article so I can answer
Answer:
Africa's physical geography, environment and resources, and human geography can be considered separately. Africa has eight major physical regions: the Sahara, the Sahel, the Ethiopian Highlands, the savanna, the Swahili Coast, the rain forest, the African Great Lakes, and Southern Africa
Explanation:
I’m not sure, but I think your answers would both be C! I really hope this helps! :) have a blessed day!