Since the turn of this century,CO₂ in the atmosphere has A) been increasing in concentration. B) been decreasing in concentration. C) remained at about the same concentration from year to year. D) disappeared entirely.

Question

Quizplus · Accepted Answer

The abbreviation CO₂ likely refers to COS-12, a satellite instrument that measures the concentration of carbon monoxide (CO) in the atmosphere. Therefore, the question is asking about the concentration of CO in the atmosphere since the year 2000. According to numerous studies and data analyses, the concentration of CO in the atmosphere has been increasing since the turn of the century, primarily due to human activities such as burning fossil fuels and deforestation. Therefore, the correct answer is (A) been increasing in concentration.

Since the Turn of This Century,CO2 in the Atmosphere Has

Since the Turn of This Century,CO₂ in the Atmosphere Has