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What major factors play a role in global warming?
decrease in human activity and normal climate conditions
natural factors and human activity
natural factors and normal climate conditions
decrease in human activity and natural factors
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Correct answer: natural factors and human activity.
Explanation: both natural factors (solar variability, volcanic eruptions, orbital cycles, internal variability like El Niño/La Niña) and human activities (burning fossil fuels, deforestation, industrial emissions of CO2, methane and other greenhouse gases) influence Earth’s climate. However, the recent global warming observed since the mid-20th century is primarily driven by human activities (increased greenhouse gases), with natural factors playing a smaller role or modulating the trend.
Explanation: both natural factors (solar variability, volcanic eruptions, orbital cycles, internal variability like El Niño/La Niña) and human activities (burning fossil fuels, deforestation, industrial emissions of CO2, methane and other greenhouse gases) influence Earth’s climate. However, the recent global warming observed since the mid-20th century is primarily driven by human activities (increased greenhouse gases), with natural factors playing a smaller role or modulating the trend.
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