Ocean Biome

What causes most coastal pollution in the United States?

• overfishing

• temperature changes

• industrial waste and sewage

• lakes and ponds

Tags

NGSS.MS-ESS3-3

NGSS.MS-ESS3-4

The majority of marine organisms are found in

• deep ocean waters.

• shallow, coastal waters

• fisheries.

• limnetic zone

Threats to ocean ecosystems are

• nutrient runoff and industrial waste discharges.

• overfishing and entanglement of marine mammals in trawl nets.

• sewage and algal blooms.

• All answer choices

Tags

NGSS.MS-ESS3-3

NGSS.MS-LS2-4

The arrangement of organisms in the open ocean is determined by the

• increase in salt content from shallow to deep waters.

• size of the benthic zone, where photosynthesis occurs.

• amount of nutrients and sunlight that are available.

• distribution of zooplankton.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Coral reefs are intricately shaped rocklike structures that are formed as a result of

• volcanic activity that is common in tropical marine environments.

• the gradual accumulation and fusion of skeletons of bony fish.

• the secretion of calcium carbonate by tiny marine animals

• minerals that are washed from land ecosystems and build up.

Tags

NGSS.MS-LS2-3

Which ecosystem has the highest level of salinity?

• ocean

• brackish marsh

• river

• pond

Which of the following is a threat to coral reefs?

• oil spills

• sewage

• pesticides

• All of the above

Tags

NGSS.MS-ESS3-3

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Why doesn’t photosynthesis occur in deep ocean water?

• The water temperature is too cold.

• There is no sunlight.

• There are not enough nutrients.

• The salinity level of the water is too high.

Tags

NGSS.MS-LS1-6

Tiny free-floating animals that live in water are called

• phytoplankton.

• algae.

• zooplankton.

• protists

Why are estuaries often called nurseries of the sea?

• They are an important source of food for humans.

• Their salt levels change regularly.

• Migrating birds use them as refuges.

• Many species use them as spawning grounds.