<span>Guyots are seamounts that have built above sea level. Erosion by waves destroyed the top of the seamount resulting in a flattened shape. Due to the movement of the ocean floor away from oceanic ridges, the sea floor gradually sinks and the flattened guyots are submerged to become undersea flat-topped peaks.</span>
Dead zones are hypoxic (low-oxygen) areas in the world's oceans and large lakes, caused by "excessive nutrient pollution from human activities coupled with other factors that deplete the oxygen required to support most marine life in bottom and near-bottom water.
Answer:
C: larger river systems
D:fewer geographic barriers
Explanation: I just did it
The highest African mountain is Kilimanjaro, which has three peaks, named Kibo, Mawenzi and Shira, of which Kibo is the tallest.