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
Only 2
Both 1 & 2
Only 1

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World Geography
The temperature inversion is

whenever the normal decrease of atmospheric temperature
when the decrease in temperature or moisture or both takes place
whenever the normal decrease of atmospheric temperature or moisture or both change with height over
All of these

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World Geography
What are secondary mineral deposits formed in caves called?

Ejecta Blanket
Pyroclastic debris
Speleogenesis
Speleothems

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