The ___________________ extends from the outer edge of the continental shelf down to the ocean floor.

In the ocean, ______________ make food by undergoing photosynthesis.

Diatoms are a tiny, abundant form of ________________ found in the ocean.

________________ are the flat seafloor areas in the deep ocean formed by deposits of sediment that fill up valleys.

______________ include crabs, snails, clams, sea urchins, and bottom dwelling fish.

Bacteria that perform chemosynthesis using sulfur compounds live...

_________________ are formed on the seafloor when one crustal plate is forced under another plate.

Tide pools are most characteristic of...

Petroleum, natural gas, sand, metals, and diamonds are mined from deposits found in...

Marine animals that actively swim in the ocean currents are called...

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