Weegy: New ocean floor forms at mid-ocean ridges.
User: Manganese nodules are
A. manganese salts that concentrate when seawater evaporates.
B. lumps of manganese and other metals found on the ocean floor.
C. deposits of manganese and iron deep under the ocean floor.
D. chunks of pure manganese found in deep-sea trenches
Weegy: C. deposits of manganese and iron deep under the ocean floor.Polymetallic nodules, also called manganese nodules, are rock concretions on the sea bottom formed of concentric layers of iron and manganese hydroxides around a core. [ The core may be microscopically small and is sometimes completely transformed into manganese minerals by crystallization. When visible to the naked eye, it can be a small test (shell) of a microfossil (radiolarian or foraminifer), a phosphatized shark tooth, basalt debris or even fragments of earlier nodules. ]
User: Which of the world’s oceans is the largest and deepest?
A. Arctic Ocean
B. Atlantic Ocean
C. Indian Ocean
D. Pacific Ocean
Weegy: The Pacific Ocean is the world's largest and deepest ocean.
User: At least 80 percent of ocean water is included in the
A. transition zone.
B. thermocline.
C. surface mixed zone.
D. deep zone
Weegy: At least 80 percent of ocean water is included in deep zone.
User: A region’s photosynthetic productivity is influenced most significantly by
A. availability of nutrients and amount of solar radiation.
B. mean temperature and maximum depth.
C. the type of organisms that live there.
D. distance from the intertidal zone and average depth
Weegy: A region's photosynthetic productivity is influenced most significantly by: A. availability of nutrients and amount of solar radiation.
User: The transfer of energy between algae and herbivores is about
A. 1 percent.
B. 2 percent.
C. 5 percent.
D. 10 percent
Weegy: The transfer of energy between algae and ...
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