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What is an ocean trench?
A deep canyon that forms where oceanic plates collide
A mountain range
A piece of scube diving equipment
What is the definition of sea level?
How flat the ocean is
The average level of the ocean's surface at any given time
What is an ocean current?
How fast the water flows
A large volume of water flowing in a certain direction
What is salinity?
The amount of sodium dissolved in seawater
The amount of salts dissolved in seawater
Both of the above
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