Climate 101: Deforestation | National Geographic

What percentage of the planet is covered by forests?

• 10%

• 20%

• 30%

• 40%

What role do ecosystems created by forests play on Earth?

• They increase pollution.

• They support life.

• They decrease biodiversity.

• They cause deforestation.

At the current rate of destruction, how long could it take for the world's rainforest to completely disappear?

• 50 years

• 100 years

• 150 years

• 200 years

What percentage of greenhouse gas emissions are Forestry and Agriculture responsible for?

• 10%

• 15%

• 24%

• 30%

What critical role do trees play in the atmosphere?

• Absorbing greenhouse gases

• Producing greenhouse gases

• Increasing soil erosion

• Reducing biodiversity

What is the impact of fewer forests on greenhouse gases?

• Decrease in greenhouse gases

• Increase in greenhouse gases

• No change in greenhouse gases

• Stabilization of greenhouse gases

What percentage of plants and animals live in forests?

• Over 50%

• Over 60%

• Over 70%

• Over 80%

How many rainforest species are estimated to go extinct each year?

• 1,000 to 2,000

• 2,000 to 3,000

• 4,000 to 6,000

• 6,000 to 8,000

What is the impact of urban sprawl on forests?

• It increases biodiversity

• It reduces the need for logging

• It leads to forest destruction

• It promotes tree planting

Are the effects of deforestation reversible?

• Yes, completely reversible

• No, not at all reversible

• Yes, but not completely

• No, they are permanent