SORU: aşağıdaki parçaya göre cevaplayınız
One learns from the passage that the people who live in the local villages ....
The Nile perch — introduced into Africa's
largest lake in 1960 to boost the availability of
protein for local inhabitants — has eaten most
of the 300 other fish species in Lake Victoria.
Capable of reaching a weight of more than 200
pounds, the perch has almost wiped out the
lake's indigenous fish. The perch has not only
eaten up rare species of ornamental fish, it has
also preyed on a valuable species that helped to
control schistosomiasis, a potentially
dangerous disease. Residents of the hundreds
of fishing villages that border Lake Victoria
have also seen their traditional livelihood
disappear. There are no small fish left in the
lake, and the villagers cannot compete with the
large trawlers, with their stronger nets, that
catch most of the perch.