Nature vs. Society

Marine organisms make their shells from calcium and

• chloride
• carbonate
• seawater

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Ocean acidification begins with 

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

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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

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According to this slide...

• CO₂ is causing marine life to die by "poisoning' the water

• CO₂ is destroying sea shells

• CO₂ is formed from the combustion of Octane

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What is deforestation?

• Clearing Earth's forests on a massive scale
• Eating too much vegetables
• Going to a forest and pulling weeds
• Clearing the five trees in my backyard

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Deforestation is caused mainly by

• agriculture activities
• snakes
• banks
• schools

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Deforestation has an affect on the water cycle

• true
• false

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Deforestation causes an increase in atmospheric carbon dioxide

• true

• false

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What is the leading cause of deforestation?

• Diseases 
• Housing market
• Agriculture and Farming
• Paper mill

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What does deforestation effect?

• Plants and animals
• Our biosphere
• Humans
• All of the above

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