The natural vegetation regions of sub-Saharan Africa "<span>A. are heavily impacted by human activity" since vegetation growth in this region is relatively rare, so it is frequently harvested by humans for food. </span>
The correct answer is A. are heavily impacted by human activity.
On page 221, last paragraph it explains that the natural vegetation regions of Africa South of the Sahara correspond closely to the climatic regions but is becoming increasingly modified by human actions.
