Respuesta :
Answer:
Option (B)
Explanation:
Abyssal plains are underwater features that forms more than 50% of the total ocean floor. It generally lies at a depth ranging from 3 to 6 km below the mean sea level, which mainly covers the region between the mid oceanic ridges and the continental rise. It is comprised of numerous sediments and the rocks formed here mainly basaltic igneous rocks. This abyssal plain region is not uniformly horizontal. They are irregular and rough surfaces.
Thus, the majority of the seafloor is comprised of the abyssal plains.
Therefore, the correct answer is option (B).
Answer:
C. mid-ocean ridges (less than 2.5 km below sea level)
Explanation:
- The ocean crust is based on the eruption of the crust and due to the formation of the mantel material and formed when the plates tend to collide and are modified by the chemical seawater.
- This occurs at the mid-ocean ridges and also have a scattered hot spots and the deep oceans are featured by the mountains and deep valleys and the vast crust. underwater volcanoes, hydrothermal vents, and new ocean floor crust. Example of the Mid-Atlantic Ridge.
