Which of the following conditions for the survival of corals are correct? 1. The water temperature must not fall below 20°C
Which of the following conditions for the survival of corals are correct?
1. The water temperature must not fall below 20°C
2. The depth of water should not exceed 30 fathoms
3. The salinity should be less than 10%
4. The water should be free from sediments
Select the correct answer from the codes given below:
(a) 1 and 2 (b) 3 and 4 (c) 1, 2 and 3 (d) 1, 2 and 4
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