Answer:APopulations consist of one species; communities consist of many species
Explanation:in an ecosystem, living things relates with each other and also with the non living things in their environment. The study of this relationship is called ecology.when living organisms of the same one species are living together in a place,it is called a population. However when several different species of living organisms coexist in a place, it is called a community.
For example in a forest a population might be the gorillas living in that forest. While in that same rain forest, a community would include the gorillas,birds, antelopes ,trees etc forms the community. They interacts with each other in the ecosystem.