Answer :
Final answer:
Carbon dioxide levels in Earth's atmosphere have increased significantly due to human activities like burning fossil fuels, impacting the planet's climate through the greenhouse effect.
Explanation:
Carbon dioxide is the gas in Earth's atmosphere that has increased over time due to burning fossil fuels. Since the industrial revolution, human activities have led to a significant rise in carbon dioxide levels, impacting Earth's climate through the greenhouse effect.
Anthropogenic greenhouse gases, particularly carbon dioxide, have increased by 40 percent since 1750. The burning of fossil fuels is a major contributor to this increase, altering the natural greenhouse effect and causing global warming.
Scientists agree that the level of carbon dioxide in the atmosphere has been steadily rising over the past 200 years due to human activities such as burning fossil fuels, leading to concerns about climate change.
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