Which atmospheric gas has increased by approximately 50 percent in the past 200 years?Multiple choice question.OxygenNitrogenCarbon dioxideChlorofluorocarbon
Question
Which atmospheric gas has increased by approximately 50 percent in the past 200 years?
- Oxygen
- Nitrogen
- Carbon dioxide
- Chlorofluorocarbon
Solution
The atmospheric gas that has increased by approximately 50 percent in the past 200 years is Carbon dioxide (CO₂). This increase is primarily attributed to human activities such as burning fossil fuels, deforestation, and industrial processes, which release significant amounts of CO₂ into the atmosphere.
In contrast, oxygen and nitrogen are relatively stable as they make up the bulk of Earth's atmosphere, while chlorofluorocarbons (CFCs) have been regulated due to their harmful effects on the ozone layer but do not represent a 50 percent increase in the same context as CO₂.
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