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Assertion (A) : Because of the Sun’s UV radiation, Earth’s upper atmosphere is partly (0.1% or less) ionized plasma at altitudes of 70- 1500 km. Reason (R) : This region, ionosphere, is coupled to both the magnetosphere and the neutral atmosphere. Codes

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Assertion (A) : Because of the Sun’s UV radiation, Earth’s upper atmosphere is partly (0.1% or less) ionized plasma at altitudes of 70- 1500 km. Reason (R) : This region, ionosphere, is coupled to both the magnetosphere and the neutral atmosphere. Codes






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