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.
Only 5 body fluids can contain enough HIV to infect someone: 1  blood. 2  semen (including pre-cum) 3  rectal fluid.  vaginal 1  fluid. breast milk.