A population is best described as a group of the same species of organisms living together in a specific area or habitat. This means that all members of the population are of the same type and can potentially interbreed with each other to produce fertile offspring. For example, a population of deer may live in a forested area and consist of only one species of deer. The size of a population can vary depending on factors such as availability of resources and environmental conditions. Understanding population dynamics is important for conservation efforts and managing natural resources.