MCQ 161:
What is the main environmental concern related to hydraulic fracturing (fracking)?
A) Increased renewable energy sources
B) Water contamination and depletion
C) Improved air quality
D) Enhanced biodiversity
Answer: B) Water contamination and depletion
Explanation: Hydraulic fracturing raises concerns about potential contamination of groundwater and excessive water usage, impacting local ecosystems.
MCQ 162:
What is the purpose of environmental impact assessments (EIAs)?
A) To promote industrial development
B) To evaluate the potential environmental effects of proposed projects
C) To increase pollution levels
D) To minimize public participation
Answer: B) To evaluate the potential environmental effects of proposed projects
Explanation: Environmental impact assessments are conducted to identify and mitigate potential environmental impacts of proposed projects, ensuring sustainable development.
MCQ 163:
Which of the following practices can help mitigate soil erosion?
A) Deforestation
B) Planting cover crops
C) Overgrazing
D) Monoculture farming
Answer: B) Planting cover crops
Explanation: Planting cover crops helps protect the soil from erosion, improves soil health, and enhances biodiversity.
MCQ 164:
What is the primary goal of the Convention on Biological Diversity?
A) To promote industrial growth
B) To protect and promote sustainable use of the world’s biodiversity
C) To increase resource consumption
D) To enhance urban development
Answer: B) To protect and promote sustainable use of the world’s biodiversity
Explanation: The Convention on Biological Diversity aims to conserve biodiversity, promote sustainable use of its components, and ensure fair sharing of benefits arising from genetic resources.
MCQ 165:
What is the main cause of algal blooms in water bodies?
A) Low nutrient levels
B) High levels of nitrogen and phosphorus from runoff
C) Decreased temperatures
D) Increased biodiversity
Answer: B) High levels of nitrogen and phosphorus from runoff
Explanation: Nutrient pollution, particularly from agricultural runoff, leads to algal blooms, which can deplete oxygen and harm aquatic life.
MCQ 166:
Which of the following is a potential consequence of deforestation?
A) Increased biodiversity
B) Climate change and habitat loss
C) Improved air quality
D) Enhanced ecosystem services
Answer: B) Climate change and habitat loss
Explanation: Deforestation contributes to climate change by releasing stored carbon and results in habitat loss, threatening biodiversity.
MCQ 167:
What is the primary goal of agroforestry?
A) To promote monoculture
B) To combine agriculture and forestry for sustainable land use
C) To increase chemical fertilizer use
D) To maximize land conversion for urban development
Answer: B) To combine agriculture and forestry for sustainable land use
Explanation: Agroforestry integrates trees into agricultural landscapes, enhancing biodiversity, improving soil health, and providing additional income sources.
MCQ 168:
What is the main impact of habitat fragmentation?
A) Increased species diversity
B) Isolation of populations and loss of genetic diversity
C) Enhanced ecosystem services
D) Improved habitat connectivity
Answer: B) Isolation of populations and loss of genetic diversity
Explanation: Habitat fragmentation can isolate wildlife populations, leading to reduced genetic diversity and increased vulnerability to extinction.
MCQ 169:
What is the primary purpose of the Clean Water Act?
A) To promote industrial pollution
B) To restore and maintain the integrity of the nation’s waters
C) To increase water consumption
D) To enhance urban development
Answer: B) To restore and maintain the integrity of the nation’s waters
Explanation: The Clean Water Act aims to regulate pollutants in water bodies, protecting water quality for human and environmental health.
MCQ 170:
Which of the following is a consequence of overfishing?
A) Increased fish populations
B) Disruption of marine ecosystems
C) Enhanced biodiversity
D) Improved fisheries management
Answer: B) Disruption of marine ecosystems
Explanation: Overfishing can lead to the collapse of fish populations and disrupt the balance of marine ecosystems, affecting other species and habitats.
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