Please help I don't have much time to answer this question! Imagine that a potential pathogen has been able to get through the skin, the first line of body defense What three general defense mechanisms can the body use as a second line of defense to prevent the pathogen from causing a major infection?

Is it bad to have a headache all day long?

Life expectancy in the united states is (76.4 for men and 81.1 for women). life expectancy is not the same as healthy life expectancy. healthy life expectancy is the number of years a person is expected to live in this number is obtained by subtracting years spent in poor health from overall life expectancy. the world health organization (who) calculates healthy life expectancy in 194 countries. the united states ranks twenty-ninth in the world using this measurement, with an average of of healthy life expectancy. singapore ranks number one (76 years), and japan is number two (75 years).

Explain different ways infections from different organisms can be treated.