Which of the following statement(s) is/are correct about the phenomenon of ‘blue tides’?
1. The spectacle occurs when phytoplankton (microscopic marine plants) produce light through chemical reactions in proteins.
2. The bioluminescence is an anti-predatory response of the phytoplankton to startle predators.
3. Bioluminescence is caused by heavy rain, fertilisers run off, discharge of sewage into the ocean.
Select the correct codes from below -