With reference to eutrophication, consider the following statements.
(i) It is the nutrient-enrichment of the lakes that only promotes the growth of algae.
(ii) It is the response to the addition of nutrients such as nitrates and phosphates naturally or artificially, fertilizing the aquatic ecosystem.
Which of the statements given above is/are correct?
1
(i) only
2
(ii) only
3
Both (i) and (ii)
4
Neither (i) nor (ii)