Marsupials, such as kangaroos, koalas, and wombats, are mammals that care for their newborn young in a pouch. A marsupials that are found in Australia are thought to have evolved from a single species that migrated to the island and then adapted to the various niches. What does this example illustrate? behavioral adaptation adaptive radiation geographic isolation population explosion

## Step 1
The problem presents a scenario where a single species of marsupial migrated to an island and then evolved into multiple different species, each adapted to different niches. This is a classic example of adaptive radiation.

## Step 2
Adaptive radiation is a process in evolutionary biology where a single species diversifies into multiple different species, each adapted to a different niche. This process is often driven by the availability of new resources or the creation of new ecological niches.

## Step 3
In this case, the marsupial species that migrated to the island found different niches to occupy. Over time, these different niches led to the evolution of different species, each adapted to its specific niche.

## Step 4
This process is not an example of behavioral adaptation, geographic isolation, or population explosion. Behavioral adaptation refers to changes in behavior that improve an organism's chances of survival, geographic isolation refers to physical barriers that prevent gene flow between populations, and population explosion refers to a rapid increase in the number of individuals in a population.