Marine ecosystems

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

• plankton
• estuary
• sargassums
• coral reefs

Tags

NGSS.MS-LS2-5

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

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

• cold water temperatures

• extreme water pressure

• hydrothermal vents

• lack of predators

Organisms, like seaweed, that make food through the process of photosynthesis

• consumers

• producers

• decomposers

• omnivores

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

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

• 
  oceanic
• intertidal
• deep ocean
• open ocean

What is a volcanic spot on the ocean floor called?

• hydrothermal vent

• tide pool

• polyp

• open ocean

Why are coral reef important?

• They provide a habitat for many organisms.

• They provide food for people.

• They release oxygen into the ocean zones.

• They are pretty.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

An estuary is best defined as a place where--

• fresh and salt water meet

• a river meets the Chesapeake Bay

• a group of animals are gathered

• the water from the land flows into a river

Why is it important to preserve salt marshes?

• A) They are an important source of salt for humans.

• B) They act as nurseries for some marine animals.

• C) They contain a wide variety of exotic plant species.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

What is a salt marsh?

• A) a grassy place at the mouth of every river.

• B) a thin strip of land along the ocean.

• C) an area of freshwater where weeds and grasses grow.

• D) a grassy place where salt water and fresh water mix