There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Did you know?
It is difficult to obtain enough calcium without consuming milk or other dairy foods.
Did you know?
About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.
Did you know?
Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
Determinants of health
Home Health Nurse.
Cross-sectional data showing that the amount of effort spent on personal health care increases with
Health and Race-Ethnicity
Among the health benefits of marriage is a longer life.
Chinese officials have become concerned about the lopsided gender ratio that their “one couple, ...