Final answer:
An equilibrial species with low early and middle age mortality and higher mortality at older ages exhibits a Type I survivorship curve, whereas species with high mortality in the young and lower mortality upon reaching maturity exhibit a Type III survivorship curve.
Step-by-step explanation:
You are a member of an equilibrial species that exhibits a Type I survivorship curve. This type of curve is characterized by low mortality at early and middle life stages with an increase in mortality at older ages. In contrast, a Type III survivorship curve is associated with species that experience high mortality rates among the younger individuals and lower mortality rates as individuals age, typically because they produce a large number of offspring with very little parental care. Examples of organisms with Type III survivorship curves include trees, marine invertebrates, and most fishes, where few offspring survive their younger years, but those that reach maturity are more likely to live for an extended period.