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| Q. |
Uneven distribution of insolation on the earth is mainly due to the – |
| A. | spherical shape of the earth |
| B. | distribution of land and water |
| C. | direction of the winds |
| D. | presence of pressure belts |
| Answer» A. spherical shape of the earth | |
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Explanation: Uneven distribution of insolation on the earth is mainly due to the Earth's tilted axis and the nearly spherical shape. The length of time that the Earth's surface is exposed to solar radiation also changes throughout the year, depending on the season. Another factor that affects the solar radiation on the Earth is the rotation of the Earth itself. All these factors lead to the unequal distribution of heat on the Earth, creating what is called a heat gradient. |
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