The continental shelf is:

The shallow water of the continental shelf is teeming with life.

The steep slope at the edge of the continental shelf is the:

The floor of the continental shelf and slope is:

The deepest parts of the ocean are:

Ocean trenches are deep ________.

Ocean currents are caused by: (choose all that apply)

Oceans flow like rivers in well defined circular patterns called:

The ocean's salinity varies, depending on: (Choose all the apply)

Marine organisms are dependent on the dissolved gases in the ocean for survival.

The most important organisms of the ocean ecosystem are:

Phytoplankton are plant-like producers that get their energy through photosynthesis--

________________________ produce much of the Earth's oxygen.

Ocean life depends on _____________, which form the base of the ocean food webs.

Waves are most commonly formed by:

Salt in the ocean comes from:

Which of the following always increases as the ocean depth increases?

Which of the following decreases as ocean depth increases ? (Choose all the apply)

Which of these geological features is created by living organisms ?

The diagram shows the ocean floor. "B" indicates the:

"D" indicates the:

Which is NOT a common cause of major ocean currents ?

The term "marine" in "marine habitat", refers to: