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

Aviation Tools
Bio-technical Industry
Machine Tools.
Cement Industry

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World Geography
Which among the following statements is/are correct about Dust particles in the Earth’s atmosphere?Higher concentration of dust particles is found in equatorial and polar regionsThey are generally found in the lower layers of the atmosphereSelect the correct code from the options given below:

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

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