Nutrient Cycling in the Ocean

What do some marine creatures do with carbonate ions in the ocean?

• use it as a food source

• use it as a defense mechanism

• use it to build shells and exoskeletons

• use it to cool body temperatures

Tags

NGSS.MS-LS2-3

Ocean acidification raises the pH of the ocean .

• True

• False

Tags

NGSS.HS-LS2-5

Which aquatic ecosystem has received runoff containing large amounts of nitrogen and phosphorus?

• A

• B

• C

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-ESS3-4

What is the length of the upper arm of this sea urchin larva?

• 500 micrometers

• 520 micrometers

• 560 micrometers

• 600 micrometers

All of these molecules contain carbon atoms. Which of these would be found in the atmosphere?

• carbon dioxide

• calcium carbonate

• glucose

• proteins

Tags

NGSS.MS-LS2-3

Which carbon molecule makes up the structure of coral reefs?

• carbon dioxide

• calcium carbonate

• glucose

• cellulose

Which nutrients are most likely to enter the ocean with runoff?

• oxygen and iron

• calcium and magnesium

• nitrogen and phosphorus

• carbon and oxygen

What is arrow B?

• fossil fuel formation

• decomposition

• marine snow

• photosynthesis

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

What is arrow K?

• fossil fuel formation

• sedimentation

• harvesting

• photosynthesis

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

NGSS.MS-ESS2-1

Which arrow shows carbon atoms moving by trophic transfer?

• A

• B

• C

• D

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6