MCQ 41:
Which of the following is a method to mitigate air pollution?
A) Increased use of coal
B) Promoting public transportation
C) Deforestation
D) Industrial waste dumping
Answer: B) Promoting public transportation
Explanation: Promoting public transportation helps reduce the number of vehicles on the road, leading to lower emissions and improved air quality.
MCQ 42:
What type of waste does e-waste refer to?
A) Food waste
B) Electronic waste
C) Hazardous waste
D) Medical waste
Answer: B) Electronic waste
Explanation: E-waste refers to discarded electrical or electronic devices, which can be harmful to the environment if not disposed of properly due to toxic components like lead and mercury.
MCQ 43:
Which gas is primarily released during the combustion of fossil fuels?
A) Oxygen
B) Nitrogen
C) Carbon dioxide
D) Hydrogen
Answer: C) Carbon dioxide
Explanation: The combustion of fossil fuels primarily releases carbon dioxide (CO₂), contributing to the greenhouse effect and climate change.
MCQ 44:
Which of the following is a consequence of melting glaciers?
A) Increased biodiversity
B) Rising sea levels
C) Decreased freshwater availability
D) Stabilization of ocean currents
Answer: B) Rising sea levels
Explanation: Melting glaciers contribute to rising sea levels, which can lead to coastal flooding and loss of habitat for coastal communities and ecosystems.
MCQ 45:
What is the term for species that are brought to a new habitat and cause harm?
A) Endemic species
B) Invasive species
C) Keystone species
D) Native species
Answer: B) Invasive species
Explanation: Invasive species are non-native species that, when introduced to a new environment, can outcompete local species and disrupt ecosystems, leading to biodiversity loss.
MCQ 46:
What is a major benefit of using renewable energy sources?
A) They produce large amounts of waste.
B) They are infinite and sustainable.
C) They cause significant air pollution.
D) They require extensive mining.
Answer: B) They are infinite and sustainable.
Explanation: Renewable energy sources, such as solar, wind, and hydropower, are sustainable as they can be replenished naturally and do not deplete over time, unlike fossil fuels.
MCQ 47:
What is the primary objective of the Clean Water Act?
A) To reduce air pollution
B) To protect and restore the quality of water in the U.S.
C) To regulate waste management
D) To promote renewable energy
Answer: B) To protect and restore the quality of water in the U.S.
Explanation: The Clean Water Act aims to restore and maintain the integrity of the nation’s waters by preventing point and non-point source pollution.
MCQ 48:
Which of the following gases is released from landfills and contributes to greenhouse gas emissions?
A) Oxygen
B) Nitrous oxide
C) Methane
D) Argon
Answer: C) Methane
Explanation: Methane (CH₄) is a potent greenhouse gas released during the decomposition of organic waste in landfills, contributing significantly to climate change.
MCQ 49:
What is the purpose of a carbon offset?
A) To increase carbon emissions
B) To compensate for emissions by funding equivalent CO₂ savings elsewhere
C) To promote fossil fuel use
D) To measure biodiversity loss
Answer: B) To compensate for emissions by funding equivalent CO₂ savings elsewhere
Explanation: Carbon offsets are a way to balance out emissions by supporting projects that reduce greenhouse gases, such as reforestation or renewable energy initiatives.
MCQ 50:
Which of the following is a primary source of methane emissions?
A) Natural gas production
B) Nuclear energy
C) Coal combustion
D) Wind energy
Answer: A) Natural gas production
Explanation: Methane is primarily emitted during the extraction and transportation of natural gas, making it a significant contributor to greenhouse gas emissions.
Leave a comment