Which of the following can be used for biological

Solution

Gambusia can be used for the biological control of mosquitoes. Gambusia is a fish species that feeds on larvae of mosquitoes. Oil can also be used to prevent the breeding of mosquitoes on stagnant water by creating an oil slick on water. Ointments are used by humans which provide protection from mosquito bites. Dichlorodiphenyltrichloroethane (DDT) is an insecticide which can also be used to control (Not biologically) mosquitoes.