Cow dung is appropriately used as

Methanococcus converts acetate to form . . . . . . .

If bacteria grow on cellulosic material,they produce a large amount of which gas?

Choose the correct sentence.

Assertion $A$: Herbivores release methane gas into the atmosphere.
Reason $R$: Herbivores consume a cellulose-rich diet.
Which option is correct for Assertion $A$ and Reason $R$?

Which gas is known as gobar gas?