The water below the oxygen minimum layer has:
A) No oxygen at all.
B) Only very small traces of oxygen.
C) Some of the oxygen it had when it left the surface.
D) Most of the oxygen it had when it left the surface.
Correct Answer:
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Q10: A chambered nautilus is a species of.
A)Cnidarian.
B)Bathyopelagic
Q11: The deep-sea benthos consists mostly of:
A)Deposit feeders.
B)Filter
Q12: Which of these groups of planktonic organisms
Q13: Pheromones are special chemicals that are used
Q14: The mesopelagic zone refers to the ocean
Q16: The zone immediately below the bathyalpelegic zone
Q17: Deep-sea pelagic fishes are characterized by all
Q18: The presence of bioluminescent organs on the
Q19: Photophores are:
A)Specialized eyes.
B)Buoyancy-regulating organs.
C)Specialized jaws.
D)Light-sensitive organs that
Q20: The main oceanic thermocline is located:
A)In the
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