Answer:
Population
Step-by-step explanation:
A population is a group of individuals of the same specie that lives together in one place at the same time.
Individuals in a particular population must be able to interbreed and produce viable offspring.
- A population of different species makes up a community.
- We can talk of a population of rats on an Island
- A community of living things in San Marino.
- Different communities typifies an ecosystem.