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

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

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World Geography
Which among the following statements is/are correct about the symbiotic life of Corals?Algae gives carbon dioxide and other substances the  coral polyp needs.Coral polyp gives off oxygen and other nutrients that the algae needs.Select the correct code from the options given below:

Neither 1 & 2
Both 1 & 2
Only 2
Only 1

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