Multiple Choice
In which type of interaction do both species benefit?
198
views
Certain strains of E. coli bacteria can live in human intestines, where it relies on intestinal contents for nutrition. This bacterium also produces vitamin K, which humans use to produce blood clotting factors. In this case, the relationship between humans and E. coli is:
You observe an interaction between two species. Removal of species A has a negative impact on species B. Removal of species B has a positive impact on species A. Which of the following is the most likely relationship between the two organisms?