Organisms called Methanogens are most abundant in a
(1) cattle yard
(2) polluted stream
(3) hot spring
(4) sulphur rock
(1) Methanogens are present in the gut of several ruminants animals such as cows and buffaloes and they are responsible for the production of methane (biogas) from the dung of these animals. Thus, they are most abundant in a cattle yard.