Explanation:
Nitrates and ammonia resulting from nitrogen fixation are assimilated into the specific tissue compounds of algae and higher plants. Animals then ingest these algae and plants, converting them into their own body compounds. ... The action of these bacteria tends to deplete soil nitrates, forming free atmospheric nitrogen.
The diaphragm is the primary muscle used in the process of inspiration, or inhalation
The process that allows for the growth and development of a multicellular organism is mitosis
So the answer is A. mitosis
In alimentary canal, food get digested by the action of many enzymes secreted by various glands including Liver, Pancreas and salivary glands....