CIE Biology Paper-4: Specimen Questions 120 - 120 of 120
Carbon dioxide is important greenhouse gases. The effect of human activities in increasing the concentration of greenhouse gases, such as carbon dioxide and methane, is known as the enhanced greenhouse effect.
Question number: 120 (2 of 2 Based on Passage) Show Passage
Describe in Detail
Figure shows the concentrations of carbon dioxide in the atmosphere over past years. Describe the trend in the concentrations of carbon dioxide over the past years.
Above graph shows how atmospheric carbon di oxide levels have dramatically increased in recent years.