题目内容
（请给出正确答案）
A.Arrow worms
B.Copepods
C.Ostracots
D.Diatoms
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更多“Which of these groups of planktonic organisms would be least likely to be living in the mesopelagic？”相关的问题
A、Arrow worms
B、Comb jellies
C、Diatoms
D、Copepods
A、Bacteria feed on the DOM, making it available to other animals in the food chain that feed on bacteria
B、Bacteria supply most of the DOM
C、Bacteria feed on DOM and thus it is unavailable to other animals
D、Bacteria cannot utilize DOM and thus feed on detritus, depleting it through most of the epipelagic
A、Deposit （碎屑）feeders
B、Herbivores （植食）
C、Carnivores（肉食）
D、Filter feeders（滤食）
A、Salinity changes.
B、Temperature changes.
C、Pressure changes
D、Food availability
A、Is easier to digest.
B、Falls to the bottom and stays in one place, thus being available for a longer time.
C、Gets to be eaten before it gets to pelagic animals.
D、Gets decayed at much faster rates by chemosynthetic bacteria.
A、Photosynthethic
B、Symbiotic.
C、Parasitic.
D、Chemosynthetic
A、Hydrogen sulfide （硫化氢）
B、Light
C、Heat from the hydrothermal vents.
D、Detritus.
A、Phytoplankton that utilize the heat for primary production
B、Detritus from vent deposits.
C、Deep-sea bottom fishes that cluster around the vents.
D、It filter-feeds on chemosynthetic bacteria
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