• Some nitrogen fixing bacteria help
increase the fertility. This makes the
soil more productive. What activity of
bacteria helps make soil more
productive?
●
(a) Supplying compounds of nitrogen
to the plant roots.
(b) Breaking down nitrogen rich waste
into nitrogen gas.
OUTLO
(c) Breaking down compounds of
nitrogen to release nitrogen gas.
(d) Taking up nitrogen from the air
and converting it into compounds of
nitrogen
