What Group is Represented by All of the Bacteria Species

Question

What group is represented by all of the bacteria species E. coli living inside a cow's intestine?
A) community
B) population
C) ecosystem
D) demographic transition

Accepted Answer

The group of all E. coli living inside a cow's intestine represents a population, as they are all members of the same species living in the same area and potentially interacting with each other. A community represents all the populations of different species living in a particular area, while an ecosystem includes not just the living organisms but also the physical and chemical components of their environment. Demographic transition refers to a change in a population's birth and death rates that is often associated with economic development.