Question 1:
The ....... effect refers to air pollutants, such as carbon, nitrides and methane gases, that trap much of the*^*world's heat under layers of these pollutants. As a result, this phenomenon has caused a steady increase in*^*the earth's atmospheric temperature.
A. engross
B. greenhouse
C. captivate
D. _

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Real Life: Environmental Terms (4) | C1 – Advanced