7.6 Human Activities and Climate Change

The ____________ in the atmosphere protects life on Earth.     

• Chlorofluorocarbons
• Global Warming
• Ozone
• Greenhouse Gases

One effect of global warming is __________ and desertification.   

• Changes in the Bioshphere
• Methane
• Temperature Increases 
• Drought

The ____________ contains very small amounts of ozone.     

• Ozone Layer
• Global Warming
• Greenhouses Gases
• Chlorofluorocarbons

What is a major cause of the ozone hole? 

• Fossil Fuels
• Global Warming
• Greenhouse Gases
•  Chlorofluorocarbons

Most of the carbon dioxide in the atmosphere was released by human beings burning __________.  

• Chlorofluorocarbons
• Carbon Dioxide 
•  Fossil Fuels 
• Garbage

Many human activities are increasing the level of the greenhouse _________ in the atmosphere. 

• Chlorofluorocarbons
• Warming 
• Carbon Dioxide 
• Gases 

What type of gases absorb the heat leaving the Earth’s surface?

• Chlorofluorocarbons 
• Carbon
• Greenhouse
• Global

Another effect of global warming is changes to the __________in the biosphere.    

• Ecosystem 
• The Climate
• The temperature 
•  The Atmosphere

Being more energy-efficient will help to limit climate change and ___________.  

• Ozone Layer
• Global Warming 
• Desertification
•  Fossil Fuels

The cause of increase in the temperature of Earth’s atmosphere is _____________.

• Greenhouse Gases
•  Global Warming 
•  The Sun
•  Fossil Fuels