Marine Ecosystems

Why is upwelling beneficial?

• It provides waters where commercially important fish spawn or seek refuge at some stage

• cool, deep water rises to the surface bringing nutrients for fish which benefits coastal ecosystems and fisherman

• fresh and sale water mix to support unique communities of organisms making the area very productive

• it allows scientists to determine the health of the ocean environment and monitor changes over time

In which oceanic zone do clams and crabs survive by burrowing in the sand?

• Oceanic

• Deep sea

• Open sea

• Intertidal

What lives on or near the bottom of the ocean?

• Plankton

• Nekton

• Benthos

• Hydrothermal Vents

What is microscopic and floats in the ocean?

• Plankton

• Benthos

• Nekton

• Fish

Many organisms that live in the rocky intertidal zone are able to burrow into the sand or have shells that can close tightly because they need to withstand the...

• Pounding of the waves

• changes of salinity

• periods of being underwater and exposed to air

• changes in density

The part of the ocean where ecosystems do not rely on sunlight to create nutrients, but instead rely on chemicals released from inside the Earth to sustain life....

• The intertidal zone

• Around hydrothermal vents

• The deep zone

• The surface zone

The part of the ocean that extends from the edge of one continental shelf to the other is called the....

• Nertic zone

• Open-ocean zone

• Intertidal

• Deep zone

Organism that live in tide pools have to be able to sustain which environment pressure

• Water getting colder

• Water getting darker

• Water getting deeper

• Water getting saltier

When sea surface temperatures in the equatorial Pacific Ocean are unusually warm temperatures, what may be occurring?

• El Nino

• La Nina

• Global Warming

• A hurricane

What does this form of technology measure?

• Water depth

• Water temperature

• pH levels of water

• Dissolved oxygen in water