1.

The events which occur in the water body after it has been polluted by fertilisers are given as follows :(i) Submerged algae perish(ii) Water plants undergo sudden proliferation(iii) Consumers such as fish die(iv) Oxygen levels fall(v) Bacteria act on the increased number of dead organisms.Arrange them in a correct sequence.

A. (ii)\[\to \](i)\[\to \](iii)\[\to \](v)\[\to \](iv)
B. (iii)\[\to \](iv)\[\to \](i)\[\to \](ii)\[\to \](v)
C. (ii)\[\to \](i)\[\to \](v)\[\to \](iv)\[\to \](iii)
D. (i)\[\to \](iv)\[\to \](v)\[\to \](iii)\[\to \](ii)
Answer» D. (i)\[\to \](iv)\[\to \](v)\[\to \](iii)\[\to \](ii)


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