World Geography
The main period of Mesozoic era include

Jurassic period and Triassic period
Triassic period, Jurassic period and cretaceous period
cretaceous period and Jurassic period
Triassic period and Cretaceous period

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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:

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

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