Examlex
Identify the four factors of production,and tell what type of income is earned by each factor.
Immune System
The complex network of cells, tissues, and organs that work together to defend the body against attacks by "foreign" invaders such as bacteria, viruses, and other pathogens.
Malaria
A life-threatening disease transmitted by mosquitoes, characterized by fever, chills, and anemia.
Viral Fever
A fever caused by underlying viral infections.
Common Cold
A widely prevalent, contagious viral infection of the upper respiratory tract, resulting in symptoms like sneezing, coughing, sore throat, and runny nose.
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