MCQOPTIONS
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| 1. |
What is the periodic rise and fall of the sea level on the earth that gives rise to tides ? |
| A. | the position of the moon with reference to the earth and the gravitational pull exerted mainly by the moon and partly by the sun |
| B. | None of the above |
| C. | ultraviolet rays from the sun |
| D. | infrared rays from the sun |
| Answer» B. None of the above | |