Environmental Science and Sustainability MCQs (Part-7)
What is the main cause of global warming?
A Volcanic eruptions
B Greenhouse gases
C Ozone depletion
D Natural cycles
Global warming is primarily caused by the buildup of greenhouse gases such as carbon dioxide and methane, which trap heat in the Earth’s atmosphere, leading to rising temperatures and climate change.
Which of the following is a renewable energy source?
A Coal
B Petroleum
C Wind
D Natural gas
Wind energy is renewable because it harnesses the wind, which is constantly replenished by natural forces. Unlike fossil fuels, it does not deplete resources or contribute to long-term environmental damage.
What does the term “sustainable development” focus on?
A Meeting present needs without harming future generations
B Long-term resource depletion
C Maximizing profit
D Ignoring social equity
Sustainable development seeks to balance current needs with the ability of future generations to meet their needs. It integrates environmental protection, economic growth, and social equity.
What is the purpose of an Environmental Impact Assessment (EIA)?
A To increase pollution
B To evaluate economic costs
C To assess environmental effects of projects
D To promote deforestation
An EIA is a tool used to evaluate the potential environmental impacts of a proposed project, helping decision-makers minimize or mitigate negative effects before the project proceeds.
What is the main effect of deforestation?
A Improved soil fertility
B Habitat destruction
C Increased biodiversity
D Reduced carbon dioxide levels
Deforestation leads to the destruction of habitats for many species, causing loss of biodiversity and contributing to climate change by releasing stored carbon from trees.
What is the main purpose of recycling?
A To reuse materials
B To promote landfill expansion
C To increase waste
D To pollute more
Recycling involves converting used materials into new products, helping conserve natural resources, reduce waste, and lower pollution, contributing to a more sustainable environment.
Which of the following contributes to air pollution?
A Plant growth
B Solar energy
C Vehicle emissions
D Wind energy
Vehicle emissions are a significant source of air pollution, releasing harmful gases like nitrogen oxides and carbon monoxide, which contribute to smog, respiratory issues, and climate change.
What is the main cause of soil erosion?
A Wind
B Deforestation
C Water
D All of the above
Soil erosion occurs due to various factors like wind, water, and deforestation. When trees are removed, soil becomes loose and more vulnerable to erosion, leading to reduced fertility.
What is a carbon footprint?
A The weight of carbon in the air
B The amount of greenhouse gas emissions produced
C The size of carbon deposits
D The number of trees in an area
A carbon footprint measures the total greenhouse gas emissions, especially carbon dioxide, produced by an individual or organization, helping assess its environmental impact.
Which of the following is an example of a clean energy source?
A Solar power
B Natural gas
C Coal
D Petroleum
Solar power is a clean energy source because it does not emit greenhouse gases or pollutants during electricity generation. It harnesses sunlight, a renewable resource, making it environmentally friendly.
What is the main benefit of using renewable energy?
A Increasing pollution
B Reducing carbon emissions
C Higher costs
D Depleting natural resources
Renewable energy sources, such as wind, solar, and hydro, help reduce carbon emissions by replacing fossil fuels, which are major contributors to climate change and environmental degradation.
What does sustainable farming avoid?
A Use of chemical pesticides
B Organic methods
C Crop rotation
D Water conservation
Sustainable farming avoids chemical pesticides and focuses on natural alternatives. It promotes practices like crop rotation and organic farming to protect soil health and biodiversity while maintaining productivity.
What is the main cause of groundwater contamination?
A Water conservation
B Solar energy
C Industrial waste
D Deforestation
Industrial waste, including chemicals, heavy metals, and waste byproducts, often contaminates groundwater. When these pollutants seep into the ground, they can make water unsafe for drinking and irrigation.
What is the role of the ozone layer?
A To block rainfall
B To increase global temperatures
C To promote deforestation
D To absorb harmful ultraviolet radiation
The ozone layer protects Earth by absorbing most of the Sun’s harmful ultraviolet (UV) radiation. Without the ozone layer, increased UV exposure would lead to skin cancer and other health issues.
What does “sustainable development” emphasize?
A Unlimited resource use
B Short-term growth
C Ignoring future generations
D Balance between economic, social, and environmental needs
Sustainable development emphasizes balancing the need for economic growth, social equity, and environmental protection. It ensures that development meets the needs of the present without compromising the ability of future generations to meet their needs.