Human population growth serves as an important model for population ecologists, and is one of the most important environmental issues of the twenty-first century.
Confidence votes 1. no not all, blood-borne pathogens are typically found in the blood stream and any bodily fluid that can contain blood can contain a blood borne pathogen. these include urine, feces, saliva, sperm, vaginal secretions, and even tears.
People infected with HIV carry the virus in their body fluids, including blood, semen, vaginal secretions, and breast milk. The virus can spread only if these HIV-infected fluids enter the bloodstream of another person.