Aquatic Ecosystems Marine

The base of the ocean's food chains is formed by

• blue whales
• plankton
• coral reefs
• sargassums

Which of the following is NOT a key abiotic factor in marine ecosystems?

• water temperature
• amount of sunlight
• water depth
• amount of plankton

The place where the ocean meets the land is the

• intertidal zone
• neritic zone
• oceanic zone
• benthic zone

The ocean floor, some parts of which get no sunlight, is the 

• intertidal zone
• neritic zone
• oceanic zone
• benthic zone

The area that contains the deep water of the open ocean and is where the sea floor drops sharply is the

• intertidal zone
• neritic zone
• oceanic zone
• benthic zone

The area that has warm, sunlit water and is where the ocean floor begins to slope downward is the

• intertidal zone
• neritic zone
• oceanic zone
• benthic zone

What is made of the skeletons of small animals?

• intertidal area
• coral reef
• estuary
• Sargasso Sea

What contains huge, floating rafts of algae?

• intertidal area
• coral reef
• estuary
• Sargasso Sea

Tags

NGSS.MS-LS2-3

Where have organisms adapted to keep from being swept away?

• intertidal area
• coral reef
• estuary
• Sargasso Sea

Which ecosystem contains both fresh and salt water?

• intertidal area
• coral reef
• estuary
• Sargasso Sea