Question

which of the following types of organisms are required to complete the nitrogen cycle, including the process of denitrification?
a bacteria
b producers
c consumers
d fungi

Explanation:

Denitrification is a key step in the nitrogen - cycle where nitrates are converted into nitrogen gas and released back into the atmosphere. This process is carried out by specific bacteria. Producers are mainly involved in photosynthesis and fixing carbon - not directly in denitrification. Consumers obtain nutrients by eating other organisms and are not responsible for denitrification. Fungi play roles in decomposition but not in the denitrification part of the nitrogen cycle.

Answer:

A. Bacteria