. Free-swimming animals that can move throughout the water column are called?

Examples of nekton include

An area where rivers flow into the ocean and mix fresh and salt water is a(n)?

Deep ocean technology has discovered organisms in hydrothermal vents that do not rely on sunlight to survive. What do these organisms use as their energy source?

Which best explains why inhabitants of an estuary must adapt to frequent environmental changes?

What are the 3 most abundant dissolved gases are found in the ocean?

What happens as you go down the water column? ( from the surface to the deep)

Humans cannot easily study the ocean floor because it

Upwelling is when

If you were standing on the beach and were to walk out into the ocean, which ocean zone would you first enter?Another name is splash zone.

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