Which of the following are characteristics of Coral Reefs?
(a) These are the oldest living communities on Earth.
(b) It is a high biomass producer.
(c) It is a rich floral and fauna diversity.
(d) These are shallow water tropical ecosystems.
Which of the above statement/s is/are correct?
1
Only (a) and (b)
2
Only (a), (b) and (d)
3
Only (c)
4
All of the above