Which of the following pairs is/are correctly matched?

1.  Eutrophication ----  Nutrient accumulation leading to ecosystem change occuring in impounded water

2.  Autotophism ----  Utilization, rearrangement and decompositon of complex materials predominate

3.  Heterotrophism ---  Predominace of fixation of light energy, use of simple inorganic substaces and built-up

                                  complex substance

Select the correct answer using the codes given below.

Codes: