So here we have an example problem that wants us to appropriately label the survivorship curves based on which survivorship curve our selected and case selected organisms would typically exhibit. And so, notice down below, we've got the survivorship curve where we have age on the x-axis, young individuals on the left, and older individuals on the right, and then on the y-axis, we have the number of survivors on a log scale, and then we've got these three different types of survivorship curves as well. And so, of course, recall from our last lesson video that k-selected organisms tend to have very few offspring and a high investment into each offspring as they tend to provide really good parental care, and so that means that they have high survivorship and low mortality early in life, and a pretty good portion of the offspring that are born will have a high likelihood of making it to adulthood. And so this is all corresponding with a type 1 survivorship curve, high survivorship, low mortality early in life, and then, of course, later in life, there's higher mortality and lower survivorship. So what we're saying here is that type 1 survivorship curve is associated with k-selected organisms.
Now also recall from our last lesson video that r-selected organisms, on the other hand, are at the other end of the spectrum, and so they have many offspring, usually 100 or thousands of offspring, and very low investment into each one as they don't tend to provide as good of parental care. And so what that means is that early on in life, there will be really high mortality rates and low survivorship, and not many of the offspring will survive to adulthood. But the ones that do will have low mortality and higher survivorship. And so this is corresponding with a type 3 survivorship curve, and so what we're saying is that type 3 survivorship is associated with r-selected organisms or species. And so, this here concludes our example problem, and I'll see you in our next video.