PDF chapter test TRY NOW
Look at the diagram given below and answer the following questions.
Soil fertility is increased by bacteria. How?
Soil fertility is increased by bacteria. How?
a. A dark-coloured, organic material formed by microorganisms acting on these dead and decaying plant parts is called _________.
b. Humus _________ as it contains mineral salts that mix with the soil.
c. Plants such as _________ and bacteria like _________ are also widely used in agriculture to fix nitrogen in the soil.