1. What is deforestation?
A) Planting new trees
B) Cutting down forests permanently
C) Growing crops
D) Rainfall increase
Answer: B
2. The main cause of deforestation worldwide is:
A) Urbanization
B) Agriculture expansion
C) Mining
D) Floods
Answer: B
3. Which gas increases in the atmosphere due to deforestation?
A) Oxygen
B) Nitrogen
C) Carbon dioxide
D) Helium
Answer: C
4. Deforestation directly contributes to:
A) Soil fertility increase
B) Soil erosion
C) More wildlife
D) Cleaner air
Answer: B
5. Forests are important because they help in:
A) Reducing carbon dioxide
B) Increasing pollution
C) Producing plastic
D) Causing drought
Answer: A
6. Which human activity leads to large-scale forest clearing?
A) Afforestation
B) Shifting cultivation
C) Rainwater harvesting
D) Recycling
Answer: B
7. Deforestation affects the water cycle by:
A) Increasing rainfall
B) Reducing evaporation
C) Disturbing rainfall patterns
D) Stopping rivers
Answer: C
8. The loss of forests results in:
A) Biodiversity loss
B) More oxygen production
C) More habitats
D) Climate stability
Answer: A
9. Cutting trees for timber is an example of:
A) Natural cause
B) Human cause
C) Volcanic activity
D) Earthquake effect
Answer: B
10. Which continent has the largest tropical rainforest?
A) Asia
B) Africa
C) South America
D) Europe
Answer: C
11. The Amazon Rainforest is mainly affected by:
A) Ice melting
B) Deforestation for cattle ranching
C) Snowfall
D) Earthquakes
Answer: B
12. Deforestation increases the risk of:
A) Floods
B) Snowstorms
C) Solar eclipses
D) Tides
Answer: A
13. Removing trees decreases:
A) Wildlife habitat
B) Desert area
C) Pollution
D) Global warming
Answer: A
14. Slash-and-burn farming is also called:
A) Terrace farming
B) Commercial farming
C) Shifting cultivation
D) Organic farming
Answer: C
15. Which layer of soil is most affected by deforestation?
A) Bedrock
B) Topsoil
C) Mantle
D) Core
Answer: B
16. Trees help prevent climate change by:
A) Releasing carbon dioxide
B) Absorbing carbon dioxide
C) Producing methane
D) Blocking sunlight
Answer: B
17. Deforestation contributes to global warming because:
A) Trees cool the Earth
B) Trees store carbon
C) Trees create clouds
D) Trees produce nitrogen
Answer: B
18. Which industry is a major driver of forest destruction?
A) Fishing
B) Logging
C) Tourism
D) Education
Answer: B
19. Replanting trees is known as:
A) Urbanization
B) Desertification
C) Afforestation
D) Industrialization
Answer: C
20. Forest loss leads to extinction of:
A) Rocks
B) Animals and plants
C) Rivers
D) Clouds
Answer: B
21. Which natural disaster can be intensified by deforestation?
A) Landslides
B) Earth rotation
C) Solar flare
D) Eclipse
Answer: A
22. Forests act as natural:
A) Factories
B) Water filters
C) Plastic makers
D) Oil wells
Answer: B
23. Deforestation reduces the amount of:
A) Oxygen in the atmosphere
B) Nitrogen in soil
C) Salt in oceans
D) Minerals in rocks
Answer: A
24. The clearing of forests for roads is an example of:
A) Natural process
B) Human development activity
C) Biological process
D) Chemical reaction
Answer: B
25. Forests provide habitat for approximately:
A) 10% of species
B) 25% of species
C) 50% of species
D) 80% of terrestrial species
Answer: D
26. Deforestation can lead to:
A) Desertification
B) Glacier growth
C) Ozone repair
D) Ocean cooling
Answer: A
27. Which practice helps reduce deforestation?
A) Overgrazing
B) Sustainable forestry
C) Clear cutting
D) Mining
Answer: B
28. Forests play a key role in maintaining:
A) Global climate balance
B) Plastic production
C) Radio signals
D) Metal formation
Answer: A
29. Illegal logging mainly affects:
A) Desert areas
B) Forest ecosystems
C) Oceans
D) Mountains only
Answer: B
30. The long-term impact of deforestation includes:
A) Improved soil quality
B) Stable climate
C) Increased biodiversity
D) Climate instability
Answer: D