Ocean acidification/Energy Flow

Ocean acidification begins with 

• pollution from ships
• carbon dioxide released from combustion
• dumping of waste from cities into the ocean

Carbon dioxide and seawater combine to form

• calcium carbonate
• carbon monoxide
• carbonic acid 

The H+ ion is a(n)

• acid
• base
• neutral

Marine organisms make their shells from calcium and

• chloride
• carbonate
• seawater

An example of a marine organism that needs calcium carbonate 

• a crab
• a shark
• an octopus

Very slight increases in the acidity of seawater __________  marine organisms that make shells.

• doesn't bother
• has no effect on 
• is unhealthy and stresses

Carbon dioxide levels in the air have changed throughout earth's history.  The difference today is how ______ the change is happening.

• rapidly 
• slowly 
• wide spread

Which molecule makes water acidic?

• Carbonate Ions

• Carbon Dioxide

What happens to 1/4 of the greenhouse gases in the atmosphere?

• It is released into space.

• It gets absorbed by the ocean.

When carbon dioxide ions react with water, what molecules do they release?

• Hydrogen Ions

• Carbonate Ions