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1. What is the primary greenhouse gas emitted by human activities?
A
Nitrous oxide (N2O)
B
Methane (CH4)
C
Carbon dioxide (CO2)
2. Which layer of the atmosphere contains the ozone layer?
A
Mesosphere
B
Stratosphere
C
Troposphere
3. What is the main cause of ocean acidification?
A
Overfishing
B
Plastic pollution
C
Increased CO2 absorption
4. Which renewable energy source is derived from the sun?
A
Wind energy
B
Solar energy
C
Geothermal energy
5. What is deforestation primarily responsible for?
A
Increased rainfall
B
Loss of biodiversity
C
Soil fertility
6. Which gas is primarily responsible for global warming?
A
Hydrogen
B
Carbon dioxide
C
Oxygen
7. What is the term for the gradual increase in Earth's average temperature?
A
Climate change
B
Ozone depletion
C
Global warming
8. Which of the following is a consequence of climate change?
A
Increased ice formation
B
Rising sea levels
C
Decreased biodiversity
9. What is the largest source of freshwater on Earth?
A
Lakes
B
Glaciers and ice caps
C
Rivers
10. What is the practice of planting trees to restore forests called?
A
Afforestation
B
Deforestation
C
Reforestation
11. What is the primary cause of deforestation in the Philippines?
A
Illegal logging
B
Agricultural expansion
C
Urban development
12. Which of the following is a major threat to marine biodiversity in the Philippines?
A
Tourism
B
Mining
C
Overfishing
13. What percentage of the Philippines' land area is protected as national parks?
A
About 15%
B
25%
C
5%
14. Which invasive species poses a threat to local ecosystems in the Philippines?
A
Mangrove tree
B
Bamboo
C
Golden apple snail
15. What is the main source of air pollution in urban areas of the Philippines?
A
Agricultural burning
B
Industrial waste
C
Vehicle emissions
16. Which natural disaster is most common in the Philippines due to climate change?
A
Earthquakes
B
Volcanic eruptions
C
Typhoons
17. What is the primary goal of the Philippine Clean Air Act?
A
To improve air quality
B
To reduce water pollution
C
To protect wildlife
18. Which organization monitors environmental compliance in the Philippines?
A
Department of Health
B
Department of Agriculture
C
Department of Environment and Natural Resources (DENR)
19. What is a significant consequence of plastic pollution in the Philippines?
A
Soil erosion
B
Marine life entanglement
C
Airborne diseases
20. Which endangered species can be found in the Philippines?
A
African Elephant
B
Philippine Eagle
C
Bengal Tiger
21. What major environmental issue has affected the Philippines due to deforestation?
A
Soil erosion
B
Air pollution
C
Water scarcity
22. Which natural disaster has been exacerbated by climate change in the Philippines?
A
Typhoons
B
Volcanic eruptions
C
Earthquakes
23. What percentage of the Philippines' original forest cover remains today?
A
About 50%
B
About 20%
C
About 10%
24. Which marine ecosystem is critically endangered in the Philippines?
A
Seagrass beds
B
Mangroves
C
Coral reefs
25. What is a major cause of water pollution in the Philippines?
A
Natural sediment
B
Industrial waste
C
Rainwater
26. Which invasive species threatens local biodiversity in the Philippines?
A
Coconut rhinoceros beetle
B
Green iguana
C
Asian carp
27. What is the primary source of air pollution in urban areas of the Philippines?
A
Industrial smoke
B
Household waste
C
Vehicle emissions
28. Which Philippine island is known for its biodiversity hotspots?
A
Palawan
B
Luzon
C
Mindanao
29. What is a significant impact of mining activities in the Philippines?
A
Enhanced agriculture
B
Habitat destruction
C
Increased tourism
30. What initiative aims to restore the Philippines' forests?
A
Biodiversity Conservation Plan
B
National Greening Program
C
Clean Water Act