Final answer:
CO₂ is the primary greenhouse gas and anthropogenic contributor.
Explanation:
Carbon dioxide (CO₂) is the largest contributor to the greenhouse effect, constituting 84% of greenhouse gases in the atmosphere. It is mainly emitted from sources like coal-fired power plants, vehicles, and industrial activities.
Carbon dioxide (CO₂) is also the largest contributor to anthropogenic greenhouse gases, accounting for 50% of positive forcing. Human activities such as burning fossil fuels are the primary sources of CO₂ emissions.
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