The nitrogen molecules present in air can be converted into nitrates and nitrites by:A. A biological process of nitrogen fixing bacteria present in soil B. A biological process of carbon fixing factor present in soil C. Any of the industries manufacturing nitrogenous compounds D. The plants used as cereal crops in field

The nitrogen molecules present in air can be converted into nitrates a

1.	The nitrogen molecules present in air can be converted into nitrates and nitrites by:A. A biological process of nitrogen fixing bacteria present in soil B. A biological process of carbon fixing factor present in soil C. Any of the industries manufacturing nitrogenous compounds D. The plants used as cereal crops in field
Answer» Nitrifying bacteria in the soil convert ammonia into nitrite (NO₂-) and then into nitrate (NO₃-). This process is called nitrification. Compounds such as nitrate, nitrite, ammonia, and ammonium can be taken up from soils by plants and then used in the formation of proteins.