When you wade into the ocean at the beach you are walking along the continental (a)   .

The continental (a)   is found at the border between continental and oceanic crust.

Parts of the continental slope are actually more like (a)   .

At the end of the continental slope, the ocean floor gradually flattens out into the (a)   plain.

The deepest parts of the ocean are called (a)   . Some oceans plunge more than 33,000 feet below the surface.

Without oceans, the Earth's climate would be too (a)   to support life.

Water takes (a)   to heat up and cool down than land does.

The differences in water and land temperature cause (a)   to from.

Sea breezes keep the air on land (a)   during the day.

Land breezes are formed at night when the warmer air over the ocean moves (a)   and the cooler air over the land moves in to take its place.

Ocean water flows in steady, stream-like movements known as (a)   .

Surface currents are created by (a)   winds.

The Gulf Stream is a​ (a)   -water current that begins in the Caribbean Sea and moves across the North Atlantic Ocean. It keeps Europe's climate mild during the winter.

The California Current is a​ (a)   -water current that helps keep the West Coast of the United States mild during the summer.

People in some places around the world, such as deserts and small islands, don't have large supplies of (a)   water.

Salt and other minerals are removed from ocean water at (a)   plants.

Marine organisms are gathered from the ocean for both food and (a)   products.

(a)   are valued for the pearls that form inside their bodies.

Sea (a)   is an ocean water product that is used as a seasoning for cooking, a nutrient for farm animals, a tool for refining metals, and much more.