Which one of the following combinations of organisms are responsible for the formation and flavour of yoghurt gt

Which group is reponsible for the formation and flavour of yoghurt ?

Which one of the following combination is responsible for higher salinity in ocean water ?

Which one of the following plate movements is responsible for the formation of mid-ocean ridge ?

Which of the following micro-organisms is responsible for causing cholera?

Which one of the following combinations of radioactive decay results in the formation of an isotope of original nucleus ?