World Geography
The main objective of multi-purpose river projects are

flood controls and making rivers navigable
All of these
power generation by constructing hydro power stations
extension of irrigation facilities by constructing dams to store surplus water during the rainy seas

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World Geography
The sequence of layers of atmosphere from earth to upwards is

troposphere, tropopause, stratosphere, mesosphere , exosphere, thermosphere, thermopause
troposphere, stratosphere, stratopause, mesosphere , ionosphere
troposphere, tropopause, stratosphere, stratopause, mesosphere, mesopause, ionosphere(thermosphere, thermopause, exosphere)
troposphere, tropopause, stratosphere, thermosphere, exosphere

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