#1
Which gas is primarily responsible for global warming?
Carbon dioxide
ExplanationCarbon dioxide is a major greenhouse gas, trapping heat in the Earth's atmosphere and contributing significantly to global warming.
#2
Which of the following is a renewable energy source?
Solar power
ExplanationSolar power is a renewable energy source that harnesses the sun's energy to generate electricity.
#3
What is the term used to describe the loss of water from plant leaves?
Transpiration
ExplanationTranspiration is the process by which water is lost from plant leaves, contributing to water circulation in ecosystems.
#4
Which of the following is NOT a greenhouse gas?
Oxygen
ExplanationOxygen is not a greenhouse gas; greenhouse gases trap heat in the Earth's atmosphere, and oxygen does not exhibit this property.
#5
What is the term used to describe the process by which plants convert sunlight into chemical energy?
Photosynthesis
ExplanationPhotosynthesis is the process by which plants convert sunlight into chemical energy for their growth and development.
#6
What is the main cause of deforestation worldwide?
Agricultural expansion
ExplanationAgricultural expansion, driven by the need for more farmland, is the primary cause of deforestation globally.
#7
What is the term used to describe the variety of life on Earth?
Biodiversity
ExplanationBiodiversity refers to the variety of life on Earth, including the diversity of species, ecosystems, and genetic diversity.
#8
What is the primary function of wetlands in the ecosystem?
Filtering pollutants from water
ExplanationWetlands play a crucial role in filtering pollutants from water, improving water quality in ecosystems.
#9
Which of the following is a non-point source of water pollution?
Agricultural runoff
ExplanationAgricultural runoff, carrying pollutants from fields, is a non-point source of water pollution.
#10
What is the term used to describe the process of gradual soil degradation due to poor agricultural practices?
Soil erosion
ExplanationSoil erosion is the gradual degradation of soil due to factors like water and wind erosion, often exacerbated by poor agricultural practices.
#11
Which of the following is a greenhouse gas?
Methane
ExplanationMethane is a potent greenhouse gas that contributes to the trapping of heat in the Earth's atmosphere.
#12
Which international agreement aims to reduce greenhouse gas emissions to mitigate climate change?
Paris Agreement
ExplanationThe Paris Agreement is an international accord that aims to mitigate climate change by reducing greenhouse gas emissions.
#13
What is the term used to describe the maximum population size of a species that its environment can sustain indefinitely?
Carrying capacity
ExplanationCarrying capacity is the maximum population size that a species can sustain in its environment over the long term.
#14
Which of the following is a major cause of ocean acidification?
Industrial pollution
ExplanationIndustrial pollution, particularly emissions leading to increased carbon dioxide in the atmosphere, is a major cause of ocean acidification.
#15
What is the primary source of mercury pollution in aquatic ecosystems?
Coal combustion
ExplanationCoal combustion is a primary source of mercury pollution in aquatic ecosystems, posing risks to water quality and aquatic life.