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Coral Reefs

Consider the following statements vis-à-vis ‘Coral Reefs/Corals’:

  1. It is a ‘foundational species’ of the aquatic ecosystem.
  2. They are generally found on the mouth of the river as they don’t need the salinity.
  3. Coral reefs formation is an example of symbiotic relationship.

Choose the correct answer from the code given below:

A
1 and 2 only
B
2 and 3 only
C
1, 2 and 3
D
1 and 3 only
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