Which one of the following are commonly known as 'Biological Supermarkets'?

Which of the following is known as "World Wetlands Day"?

Coral reefs are not found in which one of the following regions?

Coral reefs are not found in which one of the following regions?

Which of the following statements is not true about "ecological niche" ?

Which one of the following States/UTs has the largest area under Coral Reefs in India?