Marine Biomes and Ocean Productivity

The flow of energy through an ecosystem can be depicted in a food web. What forms the base of the open ocean food web?

• algae
• fish 
• shrimp
• whales

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NGSS.MS-LS2-3

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The flow of energy through an ecosystem can be depicted in a food web. What forms the base of the open ocean food web?

• algae
• fish 
• shrimp
• whales

Tags

NGSS.MS-LS2-3

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An estuary....

• filters dirt and pollution out of the water
• is only found inland
• is a deposit formed where a fast flowing stream flattens
• is a small watershed

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New technologies are making it possible to obtain energy from ocean tides and waves. One such technology uses buoys that float on the surface of the water. When the buoys rise and fall, water flows past underwater turbines, generating electricity. This illustrates that the ocean...

• can be a source of nonrenewable energy
• can be a source of renewable energy
• can be made safer by using modern buoys
• can absorb large amounts of heat from the Sun

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An estuary is...

• a body of water formed where freshwater and saltwater mix
• a relatively flat land stretching from either side of a river
• the beginning of a river
• an abiotic factor of a watershed

The ocean contains ecosystems that can support life without plants. Where are these ecosystems most likely located?

• near the shoreline
• in the deep ocean
• in the open ocean
• in an estuary

In terms of photosynthesis, at what depth are organisms in the ocean most productive?

• between 1000-4000m
• below 4000 meters
• above 200 meters
• between 200 and 1000 meters

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Why are estuaries, such as the Chesapeake Bay, important?

• they help boats safely find the shore
• they are safe places for young animals to grow up
• the seaweed that grows there is a major food source for people
• they are major sources of drinking water

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Which factors limit the productivity of a marine ecosystem?

• availability of light and nutrients
• availability of nutrients and fresh water
• availability of light and chemosynthetic organisms
• availability of photosynthetic organisms and fresh water

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To which condition do all species in the ocean depths have to adapt?

• lower salinity
• extreme pressure
• swift ocean currents
• hot water temperature

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