A bacterium has been found contaminating three different areas of a plant. Although they are the same species, it is unclear if it is one contamination event or two or three separate ones. After sequencing the three strains, he finds that his phylogenetic tree shows that all three form a monophyletic group. What is the possible origin of the contaminating bacteria: a single origin, two or three contaminations? explain.

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Violence

Violence is defined as a physical act that causes or is intended to cause harm. Violence can cause physical, emotional, or both types of harm. Violence is defined by the World Health Organization as the intended use of physical force and power that causes threat or harm against oneself, another person, or against a community or group, and has the potential to cause damage, death, mental distress, maldevelopment, or poverty.