The movement inside the Earth's crust is studied by which of the following ?
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Which one of the following bio reserves of India is not included in the World Network of Biosphere Reserve?
What does SPM in environment mean?
When warm air rises up and cold air from the surrounding areas rushes in to fill its place then this sets up ________________ in air.
Which of the following layers of the atmosphere makes Radio Communication possible?
__________ acts as a shield absorbing ultraviolet radiation from the sun.
Fausa Magna is a ___________
Concentration of water vapour in troposphere is