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Which best explains why inhabitants of an estuary must adapt to frequent environmental changes?
oxygen and carbon dioxide
They must be able to withstand extreme water pressures.
sonar
The salinity of the water is constantly changing.
Oxygen is produced by photosynthetic microorganisms that live near the surface of the ocean.
surface air and ocean plants
Nutrients are increased by the movement of water.
estuary
Most of the oxygen in Earth’s atmosphere is produced in the top six inches of the oceans. Which best explains this?
oxygen and carbon dioxide
They must be able to withstand extreme water pressures.
sonar
The salinity of the water is constantly changing.
Oxygen is produced by photosynthetic microorganisms that live near the surface of the ocean.
surface air and ocean plants
Nutrients are increased by the movement of water.
estuary
Why are large numbers of ocean animals found in areas where upwelling occurs?
oxygen and carbon dioxide
They must be able to withstand extreme water pressures.
sonar
The salinity of the water is constantly changing.
Oxygen is produced by photosynthetic microorganisms that live near the surface of the ocean.
surface air and ocean plants
Nutrients are increased by the movement of water.
estuary
Which natural feature protects inland bodies of water from contamination by salt water?
oxygen and carbon dioxide
They must be able to withstand extreme water pressures.
sonar
The salinity of the water is constantly changing.
Oxygen is produced by photosynthetic microorganisms that live near the surface of the ocean.
surface air and ocean plants
Nutrients are increased by the movement of water.
estuary
Which dissolved gases are most needed by plants and animals living in the ocean?
oxygen and carbon dioxide
They must be able to withstand extreme water pressures.
sonar
The salinity of the water is constantly changing.
Oxygen is produced by photosynthetic microorganisms that live near the surface of the ocean.
surface air and ocean plants
Nutrients are increased by the movement of water.
estuary
Which technology has allowed scientists to accurately map the ocean floor?
oxygen and carbon dioxide
They must be able to withstand extreme water pressures.
sonar
The salinity of the water is constantly changing.
Oxygen is produced by photosynthetic microorganisms that live near the surface of the ocean.
surface air and ocean plants
Nutrients are increased by the movement of water.
estuary
Which property must submersibles and ROVs (remotely operated vehicles) share?
oxygen and carbon dioxide
They must be able to withstand extreme water pressures.
sonar
The salinity of the water is constantly changing.
Oxygen is produced by photosynthetic microorganisms that live near the surface of the ocean.
surface air and ocean plants
Nutrients are increased by the movement of water.
estuary
Which are the two main sources of the dissolved oxygen in the ocean?
oxygen and carbon dioxide
They must be able to withstand extreme water pressures.
sonar
The salinity of the water is constantly changing.
Oxygen is produced by photosynthetic microorganisms that live near the surface of the ocean.
surface air and ocean plants
Nutrients are increased by the movement of water.
estuary
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