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Assessment
What is the primary source of nitrogen for marine ecosystems?
Atmospheric deposition
Rock weathering
Open ocean circulation
Decomposition of organic matter
Which organisms in marine ecosystems are primarily responsible for carbon fixation?
Zooplankton
Phytoplankton
Benthic organisms
Coral reefs
What process plays a crucial role in recycling nutrients back into the marine ecosystem?
Sedimentation
Photosynthesis
Decomposition
Nutrient assimilation by fish
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