World Geography
Cincinnati (U .S .A.) is famous in the making of:

Bio-technical Industry
Cement Industry
Aviation Tools
Machine Tools.

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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:

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

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