Examlex
Increasing scarcity of a resource causes new supplies to become more and more costly.
Mild Fatigue
A low level of tiredness or exhaustion that can usually be relieved by rest.
Common Cold
A viral infection of the upper respiratory tract that is characterized by symptoms such as sneezing, coughing, a sore throat, and a runny nose.
Influenza
A highly contagious viral infection that attacks the respiratory system, often referred to as the flu.
Allergy
An immune system reaction to a foreign substance, such as pollen, bee venom, pet dander, or a certain food, that doesn't cause a reaction in most people.
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