the natural resources on which mankind is dependent are not provided by sphere ....A) atmosphere B) hydrosphere C) biosphere D) ionosphere
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The correct answer is option (D) Ionosphere.
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They are not provided by Ionosphere.
- Mankind is dependent on few systems for their needs which are the atmosphere, biosphere, hydrosphere and lithosphere.
- Birds (Biosphere) generally travel through the air (atmosphere), and water (hydrosphere) flows through the soil (lithosphere). The spheres are inextricably connected.
- The higher atmosphere of the planet, oxidised by solar radiation, is referred to as the iono sphere.
- It crosses the equator from day to night side of the planet. The radio frequencies used for communication and navigation are reflected and modified by it.
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