Marine Ecosystems

What are tiny organisms that float near the surface of the water?

• plankton
• organisms
• abiotic factor
• insects

The _________ zone is the ocean floor.

• intertidal
• neritic
• oceanic
• benthic

The __________ zone is the place where the ocean meets the land.

• intertidal
• neritic
• oceanic
• benthic

An area where fresh water from streams and rivers spills into the ocean is called an _____________.

• plankton
• estuary
• sargassums
• coral reefs

Tags

NGSS.MS-LS2-3

Where are most coral reefs found?

• warm, shallow areas of the neritic zone
• deepest, dark areas of the benthic zone
• deep water of the open ocean

Tags

NGSS.MS-LS2-3

One abiotic element of a marine ecosystem is:

• fish

• algae

• bacteria

• salinity

Which contributes most in supporting life on the deep ocean floor?

• cold water temperatures

• extreme water pressure

• hydrothermal vents

• lack of predators

Which best describes the water found in estuaries?

• backish water

• salt water

• fresh water

Tags

NGSS.MS-ESS2-4

why do plankton not grow in the deep ocean?

• because sunlight does not reach the deep ocean

• too many animals eat it before it can grow

• there are not enough dissolved gases to support it

• they can't go below the thermocline

Which type of ocean water would contain more dissolved oxygen?

• cold ocean water in polar regions

• warm ocean water in tropical regions

• temperate ocean water in subtropical regions