fill in the venn diagram that would represent this data. a study was made of 1000 rivers to determine that pollutants were in them. 177 rivers were clean, 101 were polluted only with crude oil, 439 rivers were polluted with phosphates. 72 rivers were polluted with sulphur compound and crude oil but not with phosphates. 288 rivers were polluted with phosphates but not crude oil. 463 rivers were polluted with sulphur compounds. 137 rivers were with only phosphates.​