Which of the following could trigger an event of Coral Bleaching 1 Changes in temperature of Oceanic...........

Environment and Ecology Water Pollution

Which of the following could trigger an event of Coral Bleaching?

1. Changes in temperature of Oceanic Waters

2. Addition of Silt/pollution by rivers

3. Changes in the salinity of Oceans

4. Invasion by ‘Crown of Thorns’ starfish

Select the correct answer using codes given below

1 and 2 only

2, 3 and 4 only

1 only

All of the above

All of the above will lead to coral expelling the zooxanthallae algae residing over it and lead to coral bleaching

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