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- 1. Multiple Choice
Which one can swim against currents?
Plankton
Nekton
Benthos
- 2. Multiple Choice
Which one drifts freely in the ocean (doesn't move against the current)?
Nekton
Benthos
Plankton
- 3. Multiple Choice
Which lives at the top of the ocean, or as far down as the sun can penetrate?
Nekton
Plankton
Benthos
- 4. Multiple Choice
Where do nektons live in the ocean?
Bottom
Top
Both bottom and top
Neither
- 5. Multiple Choice
Which one lives at the very bottom of the ocean?
Nekton
Plankton
Benthos
- 6. Multiple Choice
How do benthos move in the ocean?
They drift freely in the currents.
They walk along the ocean floor.
They swim against currents.
They don't move, they only stay in one spot.
- 7. Multiple Choice
Which part of the ocean is closest to the shoreline?
intertidal
benthic
pelagic
- 8. Multiple Choice
Which refers to the open ocean?
intertidal
benthic
pelagic
- 9. Multiple Choice
How would a large increase in the salinity of an estuary most likely affect the ecosystem of the estuary?
all organisms would die
all organisms would continue to live as they now do
the number of salt-tolerant organisms would increase, and the number of salt-intolerant organisms would decrease
the number of salt-intolerant organisms would increase, and the number of salt-tolerant organisms would decrease
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