MCQ 81:
What is the primary cause of global warming?
A) Deforestation
B) Increased greenhouse gas emissions
C) Ocean currents
D) Solar flares
Answer: B) Increased greenhouse gas emissions
Explanation: Global warming is primarily driven by increased greenhouse gas emissions from human activities, such as burning fossil fuels and deforestation.
MCQ 82:
Which of the following practices is most beneficial for maintaining soil health?
A) Continuous monoculture
B) Crop rotation
C) Heavy chemical use
D) Overgrazing
Answer: B) Crop rotation
Explanation: Crop rotation helps maintain soil health by preventing nutrient depletion, reducing pest and disease cycles, and improving soil structure.
MCQ 83:
What is a major contributor to the extinction of species?
A) Habitat conservation
B) Climate change
C) Urban gardening
D) Sustainable fishing
Answer: B) Climate change
Explanation: Climate change alters habitats and food availability, leading to the extinction of species that cannot adapt quickly enough to changing conditions.
MCQ 84:
What is the primary goal of the Paris Agreement?
A) To promote fossil fuel use
B) To reduce global greenhouse gas emissions
C) To increase deforestation
D) To enhance industrial growth
Answer: B) To reduce global greenhouse gas emissions
Explanation: The Paris Agreement aims to unite countries in the fight against climate change by setting targets to reduce greenhouse gas emissions and limit global warming.
MCQ 85:
Which of the following is an example of sustainable agriculture?
A) Monoculture farming
B) Organic farming
C) Intensive animal farming
D) Excessive use of chemical fertilizers
Answer: B) Organic farming
Explanation: Organic farming practices focus on sustainability by avoiding synthetic chemicals, promoting biodiversity, and maintaining soil health.
MCQ 86:
What is the primary purpose of conservation easements?
A) To promote urban development
B) To protect land from development and preserve its conservation values
C) To increase agricultural production
D) To enhance resource extraction
Answer: B) To protect land from development and preserve its conservation values
Explanation: Conservation easements are legal agreements that limit certain land uses to protect its conservation values, such as wildlife habitats or natural landscapes.
MCQ 87:
What is the main effect of plastic pollution in oceans?
A) Increased marine biodiversity
B) Harm to marine life through ingestion and entanglement
C) Improved water quality
D) Enhanced coral growth
Answer: B) Harm to marine life through ingestion and entanglement
Explanation: Plastic pollution poses significant risks to marine life, leading to ingestion, entanglement, and disruption of marine ecosystems.
MCQ 88:
What is the primary concern regarding genetically modified organisms (GMOs)?
A) They promote biodiversity.
B) They can cause allergic reactions and environmental impacts.
C) They reduce agricultural yield.
D) They eliminate pests completely.
Answer: B) They can cause allergic reactions and environmental impacts.
Explanation: GMOs raise concerns about potential allergic reactions in consumers and possible environmental impacts, such as the unintended spread of modified genes to wild populations.
MCQ 89:
Which of the following is a consequence of overfishing?
A) Increased fish populations
B) Decline in marine biodiversity
C) Enhanced ecosystem stability
D) Improved fishing yields
Answer: B) Decline in marine biodiversity
Explanation: Overfishing can lead to the decline of fish populations and disrupt marine ecosystems, resulting in decreased biodiversity.
MCQ 90:
What is the main focus of sustainable development?
A) Maximizing economic growth at any cost
B) Balancing economic growth with environmental protection and social equity
C) Reducing government regulations
D) Promoting industrialization
Answer: B) Balancing economic growth with environmental protection and social equity
Explanation: Sustainable development seeks to meet present needs without compromising the ability of future generations to meet their own needs, focusing on economic, environmental, and social sustainability.
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