13. | The propagation of radio signals is greatly influence by | |||||||
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14. | The pyramidal peaks that form when several cirques chisel a mountain form three more sides are called | |||||||
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15. | The process that involves the eroded material being dissolved and carried along in water as individual ions is called | |||||||
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17. | The planets with no natural satellites (reported so far) are | |||||||
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18. | The percentage of the incident radiation reflected back to space is called | |||||||
Answer: Option A Explanation: No answer description available for this question. |