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Which contains the greatest amount of earth's freshwater
phytoplankton
algae
Ocean currents prevent many smaller marine organisms from living in deep water.
salt concentrations.
glaciers and polar ice cap
at the bottom of Earth's oceans
Sound waves are emitted and bounced off the ocean floor to determine the distance from the receiver.
weathering and erosion of rocks
Oceans contain many dissolved elements like calcium, sodium, and chlorine and these elements plus others combine to form the salts in the oceans. Which of the following sources do the salts come from?
phytoplankton
algae
Ocean currents prevent many smaller marine organisms from living in deep water.
salt concentrations.
glaciers and polar ice cap
at the bottom of Earth's oceans
Sound waves are emitted and bounced off the ocean floor to determine the distance from the receiver.
weathering and erosion of rocks
Which of the following organisms could not live on the ocean floor of the oceanic zone?
phytoplankton
algae
Ocean currents prevent many smaller marine organisms from living in deep water.
salt concentrations.
glaciers and polar ice cap
at the bottom of Earth's oceans
Sound waves are emitted and bounced off the ocean floor to determine the distance from the receiver.
weathering and erosion of rocks
Ridges, tectonic plate boundaries, and hydrothermal vents are physical features found on our planet. Where are these features found MOST OFTEN?
phytoplankton
algae
Ocean currents prevent many smaller marine organisms from living in deep water.
salt concentrations.
glaciers and polar ice cap
at the bottom of Earth's oceans
Sound waves are emitted and bounced off the ocean floor to determine the distance from the receiver.
weathering and erosion of rocks
How is sonar used to map the surface of the ocean floor?
phytoplankton
algae
Ocean currents prevent many smaller marine organisms from living in deep water.
salt concentrations.
glaciers and polar ice cap
at the bottom of Earth's oceans
Sound waves are emitted and bounced off the ocean floor to determine the distance from the receiver.
weathering and erosion of rocks
The population density of marine life is greater along the shorelines of the ocean than farther out in the deep waters of the ocean. Which statement provides the best reason for th
phytoplankton
algae
Ocean currents prevent many smaller marine organisms from living in deep water.
salt concentrations.
glaciers and polar ice cap
at the bottom of Earth's oceans
Sound waves are emitted and bounced off the ocean floor to determine the distance from the receiver.
weathering and erosion of rocks
What is the basis of open ocean food webs and provides the majority of the world's oxygen supply?
phytoplankton
algae
Ocean currents prevent many smaller marine organisms from living in deep water.
salt concentrations.
glaciers and polar ice cap
at the bottom of Earth's oceans
Sound waves are emitted and bounced off the ocean floor to determine the distance from the receiver.
weathering and erosion of rocks
Tropical seas have a high rate of evaporation. Because of this, the water in tropical seas will have higher:
phytoplankton
algae
Ocean currents prevent many smaller marine organisms from living in deep water.
salt concentrations.
glaciers and polar ice cap
at the bottom of Earth's oceans
Sound waves are emitted and bounced off the ocean floor to determine the distance from the receiver.
weathering and erosion of rocks
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