Deforestation Facts and Figures: Test Your Knowledge with This Quiz!

Natália G.R. de Mello holds doctorate and masters degress in environmental science and works as a contributor for 8 Billion Trees.Written by Natalia Mello

Quizzes Tests | November 9, 2022

An 8 Billion Trees illustration of a child standing in front of a bulldozer performing deforestation.

Deforestation is one of the world’s largest environmental problems. It has local-to-global consequences that include, but are not limited to: habitat fragmentation, erosion, disruptions in the water cycle, emission of greenhouse gases, biodiversity loss, and social marginalization.


How much do you know about this land-cover change phenomenon?

Question 1) True or False? One-third of the world’s forests have been deforested since the last ice age.

  • Increasing demands for food and feed, mining, urban expansion, and other activities have driven humans to deforest roughly 33% of all forests on Earth.1

Question 2) The Brazilian Cerrado is _______.

  • The Cerrado is often overshadowed by the Amazon, but it is an extremely biodiverse and important biome – among others, it is the ‘birthplace’ of Brazil’s water – with high rates of deforestation.2

Question 3) In Indonesia, the predominant driver of deforestation is ______.

  •  Palm oil is basically used everywhere for everything – from shampoos to chocolate spreads – and demands for this product keep on increasing, leading to severe deforestation in countries like Indonesia.3

Question 4) How many people live in and depend on forests and savannas across the world?

  • Not only indigenous populations live in forests and depend on their products – different communities and individuals also have livelihoods based on forests and their resources.4

Question 5) True or False? Global demands for food and feed are one of the main causes of deforestation in the Amazon rainforest.A man taking a chainsaw to a tree in Brazil, demonstrating deforestation in the Amazon rainforest.

  •  Beef production and soy cultivation (which mainly feeds livestock and poultry that humans eat) are the main drivers of deforestation in the Amazon, and demands for these products keep on rising.5 

Question 6) What percentage of trees had humans chopped down?

  • Be it due to small-scale agriculture and the need for fuelwood or to open up space for large farmlands and cities, humans have cut almost 50% of the world’s trees.6 

Question 7) What change in diets can contribute to reducing deforestation in tropical areas?


  • Animal-based products contribute to deforestation directly (implementation of pasturelands) and indirectly (expansion of croplands to produce feed for these animals).7

Question 8) What percentage of Earth’s terrestrial species live in forests?The tops of a deciduous forest in Georgia during fall, with an 8 Billion Trees watermark.

  • Forests host a great amount (80%!) of terrestrial plants and animals belonging to different species.6 

Question 9) In the past, forested areas used to cover roughly two-thirds of this country. Currently, not even 10% of its territory is forested. What country is that?

  • Turning forest into charcoal, fuelwood, and livestock grazing areas have driven high deforestation rates in Ghana.8,9

Question 10) Under the Bonn Challenge, how many hectares of deforested and degraded landscapes should be restored by 2030?

  • If the world meets this target, the new forests could capture up to 1.7 gigatonnes of CO2e every year.10


1Roser, H. R. (n.d.). Deforestation and Forest Loss. Retrieved 07 28, 2021, from

2Hance, J. (2020, 07 29). Cerrado: Brazil’s tropical woodland . Retrieved 07 28, 2021, from

3Science Daily. (2019, 02 01). Palm oil not the only driver of forest loss in Indonesia. Retrieved 07 28, 2021, from

4FAO. (2020). The State of the World’s Forests. Retrieved 07 28, 2021, from

5Butler, R. A. (2020, 12 04). Amazon Destruction. Retrieved 07 28, 2021, from

6National Geographic. (n.d.). Deforestation explained. Retrieved 07 28, 2021, from

7NASA. (2007, 03 30). Causes of Deforestation: Direct Causes. Retrieved 07 28, 2021, from

8DutchGreen Business. (2021, 03 14). Countries With the Highest Deforestation Rates in the World. Retrieved 97 28, 2021, from

9 Amoah, A., & Korle, K. (2020). Forest depletion in Ghana: the empirical evidence and associated driver intensities. Forestry Economics Review, 2(1), 61–80.

10IUCN. (n.d.). The Bonn Challenge. Retrieved 07 28, 2021, from