ES 8.1 Reading Quiz

What percentage of Earth's landmass is covered by forests?

• One-third

• One-half

• One-fourth

• Two-thirds

Which of the following is NOT listed as an ecosystem service provided by forests?

• Store atmospheric carbon

• Produce oxygen

• Provide raw materials for paper

• Flood control

What role do forests play in the carbon cycle?

• They release carbon dioxide into the atmosphere

• They store carbon dioxide in organic compounds

• They convert carbon dioxide into methane

• They have no role in the carbon cycle

How far do monarch butterflies travel to reach Mexico?

• more than 1,000 kilometers

• more than 2,000 kilometers

• more than 3,000 kilometers

• more than 4,000 kilometers

What natural event in 2002 caused many monarch butterflies to die?

• A drought

• A rainstorm

• A tornado

• A heatwave

What has contributed to the increased danger for monarch butterflies?

• Loss of trees

• More predators

• Increased rainfall

• Higher temperatures

What is one method being used to protect the trees for monarch butterflies?

• Paying landowners

• Using pesticides

• Building fences

• Planting new trees

What is the estimated global monetary value of ecosystem services per year according to the 2014 study?

• $125 trillion

• $76 trillion

• $20.2 trillion

• $9.1 trillion

How much ecosystem services value is lost annually since 1997, as estimated by the researchers?

• $20.2 trillion

• $16.5 trillion

• $125 trillion

• $9.1 trillion

What is the estimated value of ecosystem services provided by the world's forests alone per year?

• $9.1 trillion

• $125 trillion

• $76 trillion

• $4.4 trillion