Increasing the concentration of greenhouse gases in Earth's atmosphere decreases the transparency of the atmosphere to infrared light. decreases the transparency of the atmosphere to visible light. increases the transparency of the atmosphere to visible light. increases the transparency of the atmosphere to infrared light. Which of the following statements about global warming is NOT true? Computer models indicate that only human contributions to atmospheric carbon dioxide can account for recent global temperature rises Atmospheric carbon dioxide levels have risen dramatically over the past hundred years or so. Rises in global mean temperature tend to be closely associated with rises in atmospheric carbon dioxide concentrations. The global mean temperature in the modern era is the highest is has ever been