Oceans cover approximately what percentage of Earth's surface?
What is 70 percent?
Ocean water is a complex mixture of gases and what?
What are dissolved solids (salts)?
The basic motions of ocean water are waves, currents, and what?
What are tides?
As ocean depth increases, what happens to temperature?
What is it decreases?
Tiny free-floating organisms that live in water are called what?
What is plankton?
he shallow area of the ocean floor near the continents is called the what?
What is the continental shelf?
The most common salt found in ocean water is what?
What is sodium chloride?
Ocean currents are caused by wind patterns and differences in water what?
What are densities?
As ocean depth increases, what happens to pressure?
What is it increases?
Animal-like plankton are called what?
What is zooplankton?
Very deep areas in the ocean floor are called what?
What are ocean trenches?
Marine organisms depend on dissolved what for survival?
What are gases?
The Gulf Stream is an example of what?
What is an ocean current?
As ocean depth increases, what happens to the amount of light?
What is it decreases?
Plant-like plankton are called what?
What is phytoplankton?
The ocean floor near the continents is covered with thick layers of what?
What are sediments?
The amount of salt in ocean water is called what?
What is salinity?
Ocean currents affect the mixing of ocean waters and can affect what?
What are plant and animal populations?
These factors influence the type of what that are present at a given depth?
What are life forms?
Phytoplankton produce much of Earth’s what?
What is oxygen?
The continental slope connects the continental shelf to the continental what?
What is the continental rise?
Salinity can vary depending on evaporation and what from the land?
What is runoff?
Ocean currents also affect these routes.
What are navigation routes?
The type of life forms are influenced by the depth of the ocean, the temperature, the pressure, and the amount of what?
What is light?
Plankton flourish in areas where nutrient-rich water does what from the deep?
What is upwells?