MCQ 191:
What is the main benefit of using renewable energy sources?
A) They contribute to greenhouse gas emissions.
B) They are unlimited and sustainable long-term.
C) They increase reliance on fossil fuels.
D) They require significant land degradation.
Answer: B) They are unlimited and sustainable long-term.
Explanation: Renewable energy sources, such as solar and wind, are sustainable and can provide energy without depleting natural resources or contributing to greenhouse gas emissions.
MCQ 192:
Which of the following is a potential impact of climate change on freshwater resources?
A) Increased water availability
B) Altered precipitation patterns and increased drought frequency
C) Stabilized water temperatures
D) Improved water quality
Answer: B) Altered precipitation patterns and increased drought frequency
Explanation: Climate change can disrupt precipitation patterns, leading to increased droughts and affecting freshwater availability and quality.
MCQ 193:
What is the primary goal of sustainable fisheries management?
A) To maximize short-term profits
B) To ensure fish populations are harvested sustainably for long-term viability
C) To promote overfishing
D) To enhance bycatch rates
Answer: B) To ensure fish populations are harvested sustainably for long-term viability
Explanation: Sustainable fisheries management aims to maintain fish populations at healthy levels to ensure long-term ecological and economic viability.
MCQ 194:
What is the term for the gradual increase in Earth’s average temperature due to human activities?
A) Climate variability
B) Global warming
C) Climate adaptation
D) Natural climate change
Answer: B) Global warming
Explanation: Global warming refers to the long-term rise in Earth’s average surface temperature due to human-induced greenhouse gas emissions.
MCQ 195:
Which of the following is a significant benefit of biodiversity?
A) Decreased ecosystem resilience
B) Enhanced ecosystem services and stability
C) Increased vulnerability to diseases
D) Reduced productivity of ecosystems
Answer: B) Enhanced ecosystem services and stability
Explanation: Biodiversity contributes to ecosystem resilience, stability, and the provision of essential ecosystem services, such as pollination and nutrient cycling.
MCQ 196:
What is the primary environmental impact of agricultural runoff?
A) Improved soil health
B) Water pollution and eutrophication
C) Enhanced biodiversity
D) Increased crop yields
Answer: B) Water pollution and eutrophication
Explanation: Agricultural runoff often carries fertilizers and pesticides into water bodies, leading to pollution and eutrophication, which can harm aquatic ecosystems.
MCQ 197:
What is the term for the process of restoring ecosystems that have been degraded or destroyed?
A) Conservation
B) Restoration
C) Preservation
D) Rehabilitation
Answer: B) Restoration
Explanation: Restoration refers to the process of returning degraded or destroyed ecosystems to a healthy state, often involving replanting and habitat rehabilitation.
MCQ 198:
Which of the following is a major greenhouse gas emitted from agricultural activities?
A) Oxygen
B) Nitrogen
C) Methane
D) Helium
Answer: C) Methane
Explanation: Methane is a potent greenhouse gas released during agricultural practices, particularly from livestock and rice paddies, contributing to climate change.
MCQ 199:
What is the main objective of habitat restoration projects?
A) To increase urban development
B) To enhance biodiversity and ecosystem functionality
C) To promote resource extraction
D) To decrease wildlife populations
Answer: B) To enhance biodiversity and ecosystem functionality
Explanation: Habitat restoration projects aim to recover ecosystems, increase biodiversity, and restore ecological functions that have been lost or degraded.
MCQ 200:
What is the primary role of pollinators in ecosystems?
A) To increase herbivore populations
B) To facilitate plant reproduction through pollination
C) To contribute to soil erosion
D) To promote invasive species
Answer: B) To facilitate plant reproduction through pollination
Explanation: Pollinators play a crucial role in ecosystems by aiding the reproduction of flowering plants, which is essential for food production and biodiversity.
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