Review - ocean acidification and air components

What is the role of coral reefs in the ocean ecosystem?

• Provide shelter for ocean species

• Block and deflect ocean waves

• Produce food for marine life

• All of the above

Tags

NGSS.HS-LS2-7

What is the main cause of ocean acidification?

• Increase in carbon dioxide in the atmosphere

• Melting glaciers and ice sheets

• Burning fossil fuels

• Agriculture and land clearing

Tags

NGSS.HS-ESS2-6

What happens to the pH of the ocean as carbon dioxide increases?

• It decreases

• It increases

• It remains the same

• It fluctuates

Tags

NGSS.HS-ESS2-6

What is the current pH of the ocean?

• 8.2

• 8.1

• 7.0

• 9.0

Tags

NGSS.HS-ESS2-6

Carbon dioxide and seawater combine to form

• calcium carbonate

• carbon monoxide

• carbonic acid 

Marine organisms make their shells from calcium and

• chloride

• carbonate

• seawater

Tags

NGSS.MS-PS1-1

An example of a marine organism that needs calcium carbonate 

• a crab

• a shark

• an octopus

Tags

NGSS.HS-ESS2-6

What do some marine creatures do with the carbonate ion?

• 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

When carbon dioxide react with water, what products will decrease the pH of the ocean?

• Hydrogen Ions

• Carbonate Ions

The process of burning fuel to drive a car or operate a factory is called 

• photosynthesis

• combustion - burning

• respiration