A
The reason fresh water flows downhill.
What is gravity
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Any water that falls from the atmosphere to Earth's surface.
What is precipitation.
The ocean between North America and Europe.
What is the Atlantic Ocean
This makes the top of a surface wave fall as it nears land.
What is gravity.
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This causes surface currents to move in a circular pattern.
What is Earth's rotation.
These two features are found only on the ocean floor and not on Earth's land.
What are the continental shelf and the continental slope.
This ocean zone is the warmest and receives the most light from the sun.
What is the Sunlight Zone.
This animal startles predators by lighting up when touched.
What is the bioluminescent jellyfish.
This ocean zone receives no sunlight at all and is nearly freezing all the time.
What is the Dark Zone.
This ocean zone receives very little sun and contains many bioluminescent organisms.
What is the Twilight Zone.