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1. |
Human activities in the recent past have caused the increased concentration of methane in the rural area, but a lot of it does not remain in the atmosphere because of - 1. Its escape into the outer strato-sphere. 2. It is used for cooking by rural people. 3. The trapping of air in the polar ice caps Which of the statements given above is/are correct? |
A. | only 1 correct |
B. | 2 only correct |
C. | both are correct |
D. | both are wrong |
Answer» E. | |