The two populations don"t seem to follow the same trend.Both populations are low beteen 1960 and 1970.The decline in the Sea Lamprey population in 1960 was more rapid that the Lake trout decline in 1950sLake trout population increases between 1970 but the Sea Lamprey population remains low during this period.………….. The data supports the idea that the chemical control was effective because the population of sea...