They are used during Times of natural calamities such as floods or earthquake
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helicopters r mainly used
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These are satellites that sends the air view of natural calamities and disasters like floods and earthquake, etc. These pictures are highly accurate and help scientists to predict and analyse the movement, eye-formation, intensity of a natural disaster, etc. Satellites are typically semi-independent computer-regulated rotating systems. Satellite subsystems take care of many tasks other than monitoring and informing about natural disasters across the world.
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