Value of Forest Ecosystems

What is humus?

• A type of bird found in forests

• A type of soil erosion

• A dark, organic material that forms in soil when plant and animal matter decays

• A type of tree commonly found in forests

Which country has the highest percentage of the world's forests?

• Brazil

• China

• Canada

• Russian Federation

What percentage of people in developing countries rely on traditional medicines from plants found in tropical forests?

• 20%

• 40%

• 60%

• 80%

What is the estimated number of species of plants, animals, and fungi known to science?

• 2 million

• 1 million

• 500,000

• 1.75 million

What is the main purpose of tannins found in plants?

• To attract insects for pollination

• To make plants grow faster

• To deter animals from eating a plant's fruit or seeds before it's ripe

• To provide shade to other plants

What is the main function of mangrove forests in coastal areas?

• To provide shelter for birds

• To protect against natural disasters and provide livelihoods

• To prevent soil erosion

• To provide food for local populations

How do forests help regulate cycles of flood and drought?

• By controlling the flow of surface and groundwater into the river system

• By increasing deforestation

• By reducing the number of trees in the forest

• By building dams in the rivers

What is the estimated percentage of annual global greenhouse gas emissions contributed by deforestation and forest degradation?

• 15%

• 10%

• 20%

• 5%

What is the main purpose of the global study on 'The Economics of Ecosystems and Biodiversity' (TEEB)?

• To reduce the number of species in forests

• To understand the economic value of forests and other ecosystems for societies

• To promote deforestation

• To increase pollution in forests

What is the main benefit of intact forests in providing 'insurance' against climate change?

• To increase the cost of coastal protection

• To reduce the number of species in forests

• To provide cost-effective protection against the impacts of climate change

• To destroy natural habitats