Question 1:
Which of the following gases is the primary greenhouse gas responsible for global warming?
Explanation: The correct answer is A) Carbon dioxide (CO2). Carbon dioxide is the primary greenhouse gas responsible for global warming. It is released into the atmosphere through human activities such as burning fossil fuels and deforestation. Increased concentrations of carbon dioxide in the atmosphere contribute to the greenhouse effect and climate change.
Question 2:
Which greenhouse gas is primarily released through agricultural activities, including livestock production and rice cultivation?
Explanation: The correct answer is B) Methane (CH4). Methane is primarily released through agricultural activities, including livestock production and rice cultivation. Methane is a potent greenhouse gas with a higher global warming potential than carbon dioxide, although its atmospheric concentration is much lower.
Question 3:
Which greenhouse gas is primarily released through the combustion of fossil fuels and biomass burning?
Explanation: The correct answer is A) Carbon dioxide (CO2). Carbon dioxide is primarily released through the combustion of fossil fuels (such as coal, oil, and natural gas) and biomass burning (such as forest fires). These activities release large amounts of carbon dioxide into the atmosphere, contributing to the greenhouse effect and climate change.
Question 4:
Which greenhouse gas is primarily released through agricultural and industrial activities, as well as the burning of fossil fuels?
Explanation: The correct answer is C) Nitrous oxide (N2O). Nitrous oxide is primarily released through agricultural and industrial activities, such as the use of nitrogen-based fertilizers and the combustion of fossil fuels. It is also released naturally by biological processes in soils and oceans. Nitrous oxide is a potent greenhouse gas with a higher global warming potential than carbon dioxide.
Question 5:
Which greenhouse gas plays a beneficial role in the upper atmosphere by absorbing harmful ultraviolet (UV) radiation from the Sun?
Explanation: The correct answer is D) Ozone (O3). Ozone plays a beneficial role in the upper atmosphere (stratosphere) by absorbing harmful ultraviolet (UV) radiation from the Sun. This helps protect life on Earth from excessive UV exposure. However, ozone near the Earth's surface (troposphere) is considered a pollutant and a greenhouse gas.
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