Final answer:
Populations with high abundance usually have a large geographic range, as a greater number of individuals can cover more area. Conversely, species with smaller populations have narrower ranges, making them more susceptible to threats.
Step-by-step explanation:
Populations with high abundance tend to have a large geographic range. This can be understood by considering ecological and geographical principles that posit a correlation between the size of a population and its range. High abundance usually implies a population with a greater number of individuals, potentially allowing for a wider spread over geographical areas.
In contrast, populations with smaller numbers tend to have smaller geographic ranges and are often more concentrated. This predicament makes them more vulnerable to extinction due to environmental changes or human activities, as they lack the redundancy provided by a large range.
Studies have shown that areas with the highest concentration of species are not necessarily those with species of the largest ranges. There are many factors at play, including geography and human impact. It is also important to note that two populations may occupy the same range but could have different densities and dispersal patterns, influencing their vulnerability and interaction with the environment.
However, when concerning a single population with high abundance, it is typically associated with a large geographic range.