Humans obtain nitrogen by eating other organisms.
The correct answer is Psychoneuroimmunology.
Psychoneuroimmunology is known as the the study of the interplays among the psychological processes and the apprehensive and immune structures of the human body. The main goals of the study are the interactions among the nervous and immune structures and the relationships among mental procedures and fitness.
C
The decrease in native birds will be due to the increased competition for food. They may adapt to different foods; however, the initial and most prominent effect will be that of the native birds' population declines.
