Which of the following is a sink for CO?
Name the micro-organisms present in the soil and in the root nodules of leguminous plants which can fix atmospheric nitrogen.
Which of the following micro-organisms can cause diseases in plants?
None of these
(a) How do micro-organisms help in increasing soil fertility ?
(b) How do micro-organisms help in cleaning the environment ?
Write one word for the following : Variety of plants, animals and micro-organisms generally found in an area.