Understanding Earth's Ecosystem and Human Impact

What is a major consequence of deforestation?

• Improved air quality

• Loss of biodiversity

• Decreased animal migration

• Increased urbanization

How does deforestation directly affect animal populations?

• No effect

• Improves biodiversity

• Increases population

• Forces migration

What role do trees play in the carbon cycle?

• Produce carbon dioxide

• Absorb oxygen

• Produce nitrogen

• Absorb carbon dioxide

How does deforestation affect atmospheric carbon dioxide levels?

• Decreases them

• Increases them

• No effect

• Makes them fluctuate

Approximately how many different kinds of plants are found in the Amazon?

• Over 20,000

• Over 30,000

• Over 40,000

• Over 50,000

What is a direct action to combat deforestation?

• Planting more trees

• Increasing agricultural land

• Building more cities

• Expanding industrial areas