Q. Uneven distribution of insolation on the earth is mainly due to the
Answer: spherical shape of the earth
Notes: 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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