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:

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

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World Geography
Which among the following region has the highest density of rail network?

Western Europe
Eastern Asia
South east Asia
North America

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World Geography
What type of wood is especially suitable for making pulp and paper?

Hardwood of the temperate forests
Softwood of the temperate forests
Hardwood of the tropical forests
Softwood of the tropical forests

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